mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-18 22:54:00 +00:00
extra/jbigkit to 2.1-8
This commit is contained in:
Kevin Mihelich
parent
3b91d60567
commit
b1f656596c
5 changed files with 202 additions and 35 deletions
24
extra/jbigkit/.SRCINFO
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24
extra/jbigkit/.SRCINFO
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@ -0,0 +1,24 @@
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pkgbase = jbigkit
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pkgdesc = Data compression library/utilities for bi-level high-resolution images
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pkgver = 2.1
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pkgrel = 8
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url = https://www.cl.cam.ac.uk/~mgk25/jbigkit/
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arch = x86_64
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license = GPL-2.0-or-later
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depends = glibc
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source = https://www.cl.cam.ac.uk/~mgk25/download/jbigkit-2.1.tar.gz
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source = jbigkit-2.1-shared_lib.patch
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source = jbigkit-2.1-build_warnings.patch
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source = jbigkit-2.1-ldflags.patch
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source = jbigkit-2.1-coverity.patch
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source = 0013-new-jbig.c-limit-s-maxmem-maximum-decoded-image-size.patch
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source = 0015-jbg_newlen-check-for-end-of-file-within-MARKER_NEWLE.patch
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sha256sums = de7106b6bfaf495d6865c7dd7ac6ca1381bd12e0d81405ea81e7f2167263d932
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sha256sums = cb404e8c1d67d0788368a58f2c3da83bcf5c7049139461b16c144d1018e83174
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sha256sums = e9616f9eccfa567738b0c470708d60b086b4e0c5c6017449c7f09d0ba9335e28
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sha256sums = dc44325606c1c22f075e87e81091fbf1543c6792dda311c071b0d50d7786ff17
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sha256sums = 6abe6e18d830e811ff6d386e899f9a6bce1da7f5ed5613930e8e0c79d16c52ea
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sha256sums = 6dcddabc07864435a3c65227309e43cb66c27e08cb33851d7a7ef123fda08e29
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sha256sums = bc3924f03446dba996a192deab7c4dddd1293ef2bcc7aef61edcbc3223fc10a0
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pkgname = jbigkit
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4
extra/jbigkit/.nvchecker.toml
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4
extra/jbigkit/.nvchecker.toml
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@ -0,0 +1,4 @@
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[jbigkit]
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source = "regex"
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url = "https://www.cl.cam.ac.uk/~mgk25/jbigkit/download/"
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regex = "jbigkit-([^\"]*).tar.gz"
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@ -0,0 +1,113 @@
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From bc3293299bc4981e83b7f37f3615a6b9b27b6837 Mon Sep 17 00:00:00 2001
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From: Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
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Date: Mon, 3 Aug 2020 21:09:39 +0100
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Subject: [PATCH 13/15] new jbig.c limit s->maxmem: maximum decoded image size
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(default: 2 GB)
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this helps users to reduce denial-of-service risks, as in CVE-2017-9937
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---
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CHANGES | 9 +++++++++
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libjbig/jbig.c | 5 +++++
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libjbig/jbig.h | 2 ++
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libjbig/jbig.txt | 39 ++++++++++++++++++++++++++++-----------
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4 files changed, 44 insertions(+), 11 deletions(-)
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diff --git a/libjbig/jbig.c b/libjbig/jbig.c
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index fe54946..e9938e5 100644
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--- a/libjbig/jbig.c
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+++ b/libjbig/jbig.c
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@@ -2051,6 +2051,7 @@ void jbg_dec_init(struct jbg_dec_state *s)
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s->xmax = 4294967295UL;
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s->ymax = 4294967295UL;
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s->dmax = 256;
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+ s->maxmem = 2000000000; /* no final image larger than 2 GB by default */
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s->s = NULL;
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return;
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@@ -2640,6 +2641,10 @@ int jbg_dec_in(struct jbg_dec_state *s, unsigned char *data, size_t len,
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return JBG_EIMPL | 5;
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s->options = s->buffer[19];
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+ /* will the final image require more bytes than permitted by s->maxmem? */
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+ if (s->maxmem / s->planes / s->yd / jbg_ceil_half(s->xd, 3) == 0)
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+ return JBG_ENOMEM; /* increase s->maxmem if needed */
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+
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/* calculate number of stripes that will be required */
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s->stripes = jbg_stripes(s->l0, s->yd, s->d);
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diff --git a/libjbig/jbig.h b/libjbig/jbig.h
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index 81c1adc..2577399 100644
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--- a/libjbig/jbig.h
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+++ b/libjbig/jbig.h
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@@ -181,6 +181,8 @@ struct jbg_dec_state {
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unsigned long xmax, ymax; /* if possible abort before image gets *
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* larger than this size */
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int dmax; /* abort after this layer */
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+ size_t maxmem; /* return JBG_ENOMEM if final image layer D
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+ would require more than maxmem bytes */
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};
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diff --git a/libjbig/jbig.txt b/libjbig/jbig.txt
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index 70ca464..4547b12 100644
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--- a/libjbig/jbig.txt
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+++ b/libjbig/jbig.txt
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@@ -2,7 +2,7 @@
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Using the JBIG-KIT library
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--------------------------
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-Markus Kuhn -- 2013-09-10
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+Markus Kuhn -- 2020-08-03
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This text explains how to use the functions provided by the JBIG-KIT
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@@ -735,19 +735,36 @@ None of the above limitations can be exceeded by a JBIG data stream
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that conforms to the ITU-T T.85 application profile for the use of
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JBIG1 in fax machines.
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-The current implementation of the jbig.c decoder does not impose any
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-limits on the image size that it will process, as long as malloc() is
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-able to allocate enough heap space for the resulting bitmaps. The only
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-exception is that jbg_dec_in() will return "Input data stream uses
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+The maximum image size that a BIE header (BIH) can indicate is X_D =
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+2^32-1 pixels wide, Y_D = 2^32-1 lines high, with P = 255 bits per
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+pixel. Such an image would, in uncompressed form, require about 588
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+exabytes. Once jbg_dec_in() has received the 20-byte long BIH at the
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+start of the BIE, it will call malloc() to allocate enough memory to
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+hold the uncompressed image planes. Users may, therefore, want to
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+defend their application against excessive image-size parameters in a
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+received BIH, by checking X_D, Y_D, and P against appropriate safety
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+limits before handing over the BIE header to jbg_dec_in(). BIE headers
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+indicating too large images might be abused for denial of service
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+attacks, to exhaust the memory of a system (e.g., CVE-2017-9937). To
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+manage this risk, the jbig.c decoder will now, by default, return "Not
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+enough memory available" (JBG_ENOMEM) if the resulting final image
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+layer would occupy more than 2 gigabytes. Users can adjust this limit
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+by changing sd->maxmem right after having called jbg_dec_init(&sd).
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+The actual amount of memory allocated with malloc() calls during the
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+decoding process is somewhat higher (at least 25%) than the limit set
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+in sd->maxmem, as the decoder requires additional heap memory that
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+depends on the image dimensions.
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+
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+The jbg_dec_in() function will return "Input data stream uses
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unimplemented JBIG features" (JBG_EIMPL | 1) if Y_D equals 0xffffffff,
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which is an extreme value commonly used to encode images according to
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ITU-T T.85 where the height was unknown when the BIH was emitted.
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-After jbg_dec_in() received the 20-byte long BIH at the start of the
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-BIE, it will malloc() to allocate enough memory to hold the requested
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-image planes and layers. If you want to defend your application
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-against excessive image-size parameters in a received BIH, then do
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-make sure that you check X_D, Y_D, and P against appropriate safety
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-limits before handing over the BIH to jbg_dec_in().
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+
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+All malloc(), realloc() and free() functions called by jbig.c are
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+wrapped by the functions checked_malloc(), checked_realloc() and
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+checked_free(). These simply call abort() when memory allocation
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+fails. Developpers of embedded systems may want to replace them with
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+alternative forms of exception handling.
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There are two more limitations of the current implementation of the
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jbig.c decoder that might cause problems with processing JBIG data
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--
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2.45.0
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@ -0,0 +1,28 @@
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From 7d3c1bea895d910907e2501fe9165e353eceabae Mon Sep 17 00:00:00 2001
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From: Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
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Date: Mon, 15 Feb 2021 18:27:47 +0000
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Subject: [PATCH 15/15] jbg_newlen(): check for end-of-file within
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MARKER_NEWLEN
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fixes https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969593
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reported by Casper Sun
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---
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libjbig/jbig.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/libjbig/jbig.c b/libjbig/jbig.c
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index e9938e5..289b6d8 100644
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--- a/libjbig/jbig.c
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+++ b/libjbig/jbig.c
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@@ -3272,6 +3272,8 @@ int jbg_newlen(unsigned char *bie, size_t len)
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else if (p[0] == MARKER_ESC)
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switch (p[1]) {
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case MARKER_NEWLEN:
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+ if (p + 5 >= bie + len)
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+ return JBG_EAGAIN;
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y = (((long) bie[ 8] << 24) | ((long) bie[ 9] << 16) |
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((long) bie[10] << 8) | (long) bie[11]);
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yn = (((long) p[2] << 24) | ((long) p[3] << 16) |
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--
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2.45.0
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@ -1,4 +1,4 @@
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# Maintainer:
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# Maintainer: Balló György <ballogyor+arch at gmail dot com>
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# Contributor: Sergej Pupykin <pupykin.s+arch@gmail.com>
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# Contributor: Angel 'angvp' Velasquez <angvp[at]archlinux.com.ve>
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# Contributor: Frank Ickstadt (frank dot ickstadt at gmail dot com)
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@ -8,54 +8,52 @@
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pkgname=jbigkit
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pkgver=2.1
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pkgrel=7
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pkgdesc="Data compression library/utilities for bi-level high-resolution images"
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arch=(x86_64)
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url="https://www.cl.cam.ac.uk/~mgk25/jbigkit/"
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license=(GPL-2.0-or-later)
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depends=(glibc)
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provides=(
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libjbig85.so
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libjbig.so
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)
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source=(
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https://www.cl.cam.ac.uk/~mgk25/download/$pkgname-$pkgver.tar.gz
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$pkgname-2.1-shared_lib.patch
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$pkgname-2.1-build_warnings.patch
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$pkgname-2.1-ldflags.patch
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$pkgname-2.1-coverity.patch
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)
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sha512sums=('c4127480470ef90db1ef3bd2caa444df10b50ed8df0bc9997db7612cb48b49278baf44965028f1807a21028eb965d677e015466306b44683c4ec75a23e1922cf'
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'9f46ee24f8b5eb57935c9b2cd9bd3d61b422c2352143c59a68adee8880511dd0bba0a057f0ed070dd0111c9eb0504df060343261c824c5a5734c06a1aedb14c8'
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'9be32ccec414de5c5de7d508ff14e1f1f3a40f81a2de252ca66e0f2844a8546d353d6a7abe36895ac798816165b2c5d8a9d043ea3f0c832fecdd9170dd6f92bf'
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'fb0c1f35ba5469dd4f7f6bd2a933d3484191d2ecd8367ea865fd2396bc99825b3afa7fcd09fbf8e841acbf92ed01cf743a83df7991e7e03f9e6cf8fbe0925ae6'
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'10f4f154c4f824c9361266f27bea231b35ed4cac680587c8659b6e12c0c06141f04a22cf72dd847abcb833578d25dfe5142d10d757f8c14c70d943c8eb3d5612')
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b2sums=('7bd82f0e10a2d3794739ee85b77c5407d58753a00e014e937735f9af3043347de88a6e567609bc26de488887a6d61b0a162387fb72732b9be7e550e3f9b9539e'
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'52c5f7384f499e15a636b8e0089153750ac02da4ac850260a3243ee06d1194133f1264abc3457e52c5a15ee1a4bfad0b31042975d80273bf741b75e634845745'
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'6114609e5186e5fae1678de00f8c7336970c18923d3d3c01fbc431e95387bfe5696fe7914947ea3903c972eb54dfd24efe0d9ac3c7f4512de26f6ab138ce590c'
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'a8e36381543c0f701a589c115577da2509f02f3002926ab86b62e29e9f8a12db65b5d56387a61aa7a053e49d59e79e968c477ce096c73aa24ad3f94e28dff6b5'
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'2650020ba8ef433a3b935917297c034f01f0296a2a7c9c23c47521b823cc79ac32df8a3695f57e885b91604b138fedc1fcfea1cda8d2a79e9fd3c9680f0c06a8')
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pkgrel=8
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pkgdesc='Data compression library/utilities for bi-level high-resolution images'
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arch=('x86_64')
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url='https://www.cl.cam.ac.uk/~mgk25/jbigkit/'
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license=('GPL-2.0-or-later')
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depends=('glibc')
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source=("https://www.cl.cam.ac.uk/~mgk25/download/$pkgname-$pkgver.tar.gz"
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'jbigkit-2.1-shared_lib.patch'
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'jbigkit-2.1-build_warnings.patch'
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'jbigkit-2.1-ldflags.patch'
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'jbigkit-2.1-coverity.patch'
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'0013-new-jbig.c-limit-s-maxmem-maximum-decoded-image-size.patch'
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'0015-jbg_newlen-check-for-end-of-file-within-MARKER_NEWLE.patch')
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sha256sums=('de7106b6bfaf495d6865c7dd7ac6ca1381bd12e0d81405ea81e7f2167263d932'
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'cb404e8c1d67d0788368a58f2c3da83bcf5c7049139461b16c144d1018e83174'
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'e9616f9eccfa567738b0c470708d60b086b4e0c5c6017449c7f09d0ba9335e28'
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'dc44325606c1c22f075e87e81091fbf1543c6792dda311c071b0d50d7786ff17'
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'6abe6e18d830e811ff6d386e899f9a6bce1da7f5ed5613930e8e0c79d16c52ea'
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'6dcddabc07864435a3c65227309e43cb66c27e08cb33851d7a7ef123fda08e29'
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'bc3924f03446dba996a192deab7c4dddd1293ef2bcc7aef61edcbc3223fc10a0')
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prepare() {
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cd $pkgname-$pkgver
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# instead of a static library, create a shared library
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patch -Np1 -d $pkgname-$pkgver -i ../$pkgname-2.1-shared_lib.patch
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patch -Np1 -i ../jbigkit-2.1-shared_lib.patch
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# fix build warnings
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patch -Np1 -d $pkgname-$pkgver -i ../$pkgname-2.1-build_warnings.patch
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patch -Np1 -i ../jbigkit-2.1-build_warnings.patch
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# apply distribution LDFLAGS
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patch -Np1 -d $pkgname-$pkgver -i ../$pkgname-2.1-ldflags.patch
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patch -Np1 -i ../jbigkit-2.1-ldflags.patch
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# fix coverity issues
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patch -Np1 -d $pkgname-$pkgver -i ../$pkgname-2.1-coverity.patch
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patch -Np1 -i ../jbigkit-2.1-coverity.patch
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# security fixes from upstream
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patch -Np1 -i ../0013-new-jbig.c-limit-s-maxmem-maximum-decoded-image-size.patch
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patch -Np1 -i ../0015-jbg_newlen-check-for-end-of-file-within-MARKER_NEWLE.patch
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}
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build() {
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cd $pkgname-$pkgver
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CFLAGS+=" -fPIC"
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export EXTRA_CFLAGS="$CFLAGS"
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make -C $pkgname-$pkgver
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make EXTRA_CFLAGS="$CFLAGS"
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}
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check() {
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cd $pkgname-$pkgver
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# NOTE: tests can not be parallelized
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make test -C $pkgname-$pkgver -j1
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make test -j1
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}
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package() {
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