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Bug 1396979 - (CVE-2016-9397) CVE-2016-9397 jasper: reachable assertion in jpc_dequantize()
CVE-2016-9397 jasper: reachable assertion in jpc_dequantize()
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20161116,reported=2...
: Security
Depends On: 1434464 1396987 1396988 1396989
Blocks: 1449402
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Reported: 2016-11-21 05:20 EST by Adam Mariš
Modified: 2018-07-18 11:06 EDT (History)
25 users (show)

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Description Adam Mariš 2016-11-21 05:20:54 EST 
An assertion failure was possible to trigger in jpc_dequantize.

CVE assignment:

http://seclists.org/oss-sec/2016/q4/441
Comment 1 Adam Mariš 2016-11-21 05:36:59 EST 
Created mingw-jasper tracking bugs for this issue:

Affects: fedora-all [bug 1396987]
Affects: epel-7 [bug 1396989]
Comment 2 Adam Mariš 2016-11-21 05:37:15 EST 
Created jasper tracking bugs for this issue:

Affects: fedora-all [bug 1396986]
Affects: epel-5 [bug 1396988]
Comment 3 Tomas Hoger 2016-12-05 08:10:30 EST 
Original reporter's advisory:

https://blogs.gentoo.org/ago/2016/11/16/jasper-multiple-assertion-failure/

Relevant part of the advisory:

Affected version:
1.900.13

Output/failure:
type = 0xff76 (UNKNOWN); len = 20;00 40 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
imginfo: /tmp/portage/media-libs/jasper-1.900.13/work/jasper-1.900.13/src/libjasper/jpc/jpc_dec.c:1817: void jpc_dequantize(jas_matrix_t *, jpc_fix_t): Assertion `absstepsize >= 0′ failed.

Commit fix:
N/A

Fixed version:
N/A

Testcase:
https://github.com/asarubbo/poc/blob/master/00010-jasper-assert-jpc_dequantize

CVE:
CVE-2016-9397


Upstream bug report:

https://github.com/mdadams/jasper/issues/56
Comment 4 Tomas Hoger 2016-12-05 08:41:10 EST 
The reproducer does not work against recent jasper versions.  However, that only seems to be a side effect of a different fix causing jasper to abort image parsing earlier, rather than actually being fixed.
Comment 6 Tomas Hoger 2017-03-01 09:23:09 EST 
Remains unfixed in 2.0.11.
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