Bug 46364 - libav: Multiple issues (4.2)
libav: Multiple issues (4.2)
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 4.2
All Linux
: P3 normal (vote)
: UCS 4.2-3-errata
Assigned To: Philipp Hahn
Arvid Requate
:
Depends on:
Blocks:
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Reported: 2018-02-21 13:50 CET by Philipp Hahn
Modified: 2018-05-08 14:57 CEST (History)
1 user (show)

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What kind of report is it?: Security Issue
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Max CVSS v3 score: 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) NVD


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Description Philipp Hahn univentionstaff 2018-02-21 13:50:20 CET
New Debian libav 6:11.12-1~deb8u1 fixes:
This update addresses the following issue:
* smacker: add sanity check for length in smacker_decode_tree()
  (CVE-2017-16803)

In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.
Comment 1 Philipp Hahn univentionstaff 2018-02-21 13:56:24 CET
666594c846 Bug #46364: libav_6:11.12-1~deb8u1
Comment 2 Quality Assurance univentionstaff 2018-05-04 16:55:24 CEST
--- mirror/ftp/4.2/unmaintained/4.2-3/source/libav_11.11-1~deb8u1.dsc
+++ apt/ucs_4.2-0-errata4.2-3/source/libav_11.12-1~deb8u1.dsc
@@ -1,3 +1,9 @@
+6:11.12-1~deb8u1 [Sun, 18 Feb 2018 21:20:56 +0100] Sebastian Ramacher <sramacher@debian.org>:
+
+  * New upstream release.
+    - smacker: add sanity check for length in smacker_decode_tree()
+      (CVE-2017-16803)
+
 6:11.11-1~deb8u1 [Sat, 21 Oct 2017 15:08:38 +0200] Hugo Lefeuvre <hle@debian.org>:
 
   * Non-maintainer upload by the Security Team.
Comment 3 Arvid Requate univentionstaff 2018-05-07 11:41:13 CEST
* No UCS specific patches
* Comparison to previously shipped version ok
* Advisory Ok
Comment 4 Arvid Requate univentionstaff 2018-05-08 14:57:05 CEST
<http://errata.software-univention.de/ucs/4.2/343.html>