Out-of-bounds read in Libxml2 - CVE-2015-8317
Published: December 15, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32291
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-8317
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Gnome Development Team
Affected software:
Libxml2
Libxml2
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary error in the xmlParseXMLDecl function in parser.c. A remote attacker can create an (1) unterminated encoding value or (2) incomplete XML declaration in XML data, which triggers an out-of-bounds heap read, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
How to mitigate CVE-2015-8317
Update to version 2.9.3.
Sources
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
- http://marc.info/?l=bugtraq&m=145382616617563&w=2
- http://rhn.redhat.com/errata/RHSA-2015-2549.html
- http://rhn.redhat.com/errata/RHSA-2016-1089.html
- http://www.debian.org/security/2015/dsa-3430
- http://www.openwall.com/lists/oss-security/2015/11/21/1
- http://www.openwall.com/lists/oss-security/2015/11/22/3
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/77681
- http://www.securityfocus.com/bid/91826
- http://www.securitytracker.com/id/1034243
- http://www.ubuntu.com/usn/USN-2834-1
- https://blog.fuzzing-project.org/28-Libxml2-Several-out-of-bounds-reads.html
- https://bugzilla.gnome.org/show_bug.cgi?id=751603
- https://bugzilla.gnome.org/show_bug.cgi?id=751631
- https://bugzilla.redhat.com/show_bug.cgi?id=1281930
- https://git.gnome.org/browse/libxml2/commit/?id=709a952110e98621c9b78c4f26462a9d8333102e
- https://git.gnome.org/browse/libxml2/commit/?id=9aa37588ee78a06ca1379a9d9356eab16686099c
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
- https://support.apple.com/HT206899
- https://support.apple.com/HT206901
- https://support.apple.com/HT206902
- https://support.apple.com/HT206903
- https://support.apple.com/HT206904
- https://support.apple.com/HT206905