Bug 1452556 (CVE-2017-9049) - CVE-2017-9049 libxml2: Heap-based buffer over-read in function xmlDictComputeFastKey
Summary: CVE-2017-9049 libxml2: Heap-based buffer over-read in function xmlDictCompute...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2017-9049
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1452550 1452551 1548945 1695414
Blocks: 1452558
TreeView+ depends on / blocked
 
Reported: 2017-05-19 08:01 UTC by Andrej Nemec
Modified: 2024-01-30 08:08 UTC (History)
21 users (show)

Fixed In Version: libxml2 2.9.4
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Environment:
Last Closed: 2018-02-26 05:11:06 UTC
Embargoed:

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Description Andrej Nemec 2017-05-19 08:01:41 UTC 
libxml2 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2 to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.

References:

http://seclists.org/oss-sec/2017/q2/258
Comment 1 Andrej Nemec 2017-05-19 08:05:31 UTC 
Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1452550]
Comment 2 Andrej Nemec 2017-05-19 08:05:40 UTC 
Created mingw-libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1452551]
Comment 3 Doran Moppert 2017-05-23 02:36:02 UTC 
oss-security report suggests this is the same as CVE-2017-9050, as exactly the same patch is proposed and the stack trace passes through the same function chain.
Comment 7 Doran Moppert 2019-04-03 02:55:26 UTC 
Upstream patch:

https://gitlab.gnome.org/GNOME/libxml2/commit/45752d2c3
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