Vulnerability Details : CVE-2015-7941
libxml2 2.9.2 does not properly stop parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and libxml2 crash) via crafted XML data to the (1) xmlParseEntityDecl or (2) xmlParseConditionalSections function in parser.c, as demonstrated by non-terminated entities.
Vulnerability category: Denial of service
Products affected by CVE-2015-7941
- cpe:2.3:a:xmlsoft:libxml2:2.9.2:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-7941
1.45%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-7941
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST |
CWE ids for CVE-2015-7941
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The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-7941
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https://bugzilla.gnome.org/show_bug.cgi?id=744980
Bug 744980 – Out of bounds memory access in libxml2
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http://www.openwall.com/lists/oss-security/2015/10/22/5
oss-security - Crafted xml causes out of bound memory access - Libxml2
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http://xmlsoft.org/news.html
Releases
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http://marc.info/?l=bugtraq&m=145382616617563&w=2
'[security bulletin] HPSBGN03537 rev.1 - HPE IceWall Federation Agent and IceWall File Manager runnin' - MARC
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https://git.gnome.org/browse/libxml2/commit/?id=a7dfab7411cbf545f359dd3157e5df1eb0e7ce31
Stop parsing on entities boundaries errors (a7dfab74) · Commits · GNOME / libxml2 · GitLab
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http://rhn.redhat.com/errata/RHSA-2015-2549.html
RHSA-2015:2549 - Security Advisory - Red Hat Customer Portal
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http://www.debian.org/security/2015/dsa-3430
Debian -- Security Information -- DSA-3430-1 libxml2
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https://security.gentoo.org/glsa/201701-37
libxml2: Multiple vulnerabilities (GLSA 201701-37) — Gentoo security
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http://rhn.redhat.com/errata/RHSA-2015-2550.html
RHSA-2015:2550 - Security Advisory - Red Hat Customer Portal
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http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
Oracle Linux Bulletin - October 2015
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https://git.gnome.org/browse/libxml2/commit/?id=9b8512337d14c8ddf662fcb98b0135f225a1c489
Cleanup conditional section error handling (9b851233) · Commits · GNOME / libxml2 · GitLab
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http://www.openwall.com/lists/oss-security/2015/10/22/8
oss-security - Re: Crafted xml causes out of bound memory access - Libxml2
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http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
Oracle Solaris Bulletin - January 2016
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http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177381.html
[SECURITY] Fedora 22 Update: mingw-libxml2-2.9.3-1.fc22
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http://www.securitytracker.com/id/1034243
Libxml2 Multiple Flaws Let Remote Users Deny Service and Cause Other Unspecified Impacts - SecurityTracker
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http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
openSUSE-SU-2015:2372-1: moderate: Security update for libxml2
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http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
openSUSE-SU-2016:0106-1: moderate: Security update for libxml2
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http://rhn.redhat.com/errata/RHSA-2016-1089.html
Red Hat Customer Portal
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http://www.securityfocus.com/bid/74241
libxml2 'parser.c' Out of Bounds Read Multiple Information Disclosure Vulnerabilities
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http://www.ubuntu.com/usn/USN-2812-1
USN-2812-1: libxml2 vulnerabilities | Ubuntu security notices
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https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
HPSBGN03537 rev.1 - HPE IceWall Federation Agent and IceWall File Manager running libXML2, Remote or Local Denial of Service (DoS)
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http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177341.html
[SECURITY] Fedora 23 Update: mingw-libxml2-2.9.3-1.fc23
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