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AUSCERT External Security Bulletin Redistribution
ESB-2014.0045
graphviz security update
14 January 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: graphviz
Publisher: Debian
Operating System: Debian GNU/Linux 6
Debian GNU/Linux 7
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-1236 CVE-2014-0978
Original Bulletin:
http://www.debian.org/security/2014/dsa-2843
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running graphviz check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-2843-1 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
January 13, 2014 http://www.debian.org/security/faq
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Package : graphviz
Vulnerability : buffer overflow
Problem type : local (remote)
Debian-specific: no
CVE ID : CVE-2014-0978 CVE-2014-1236
Debian Bug : 734745
Two buffer overflow vulnerabilities were reported in Graphviz, a rich
collection of graph drawing tools. The Common Vulnerabilities and
Exposures project identifies the following issues:
CVE-2014-0978
It was discovered that user-supplied input used in the yyerror()
function in lib/cgraph/scan.l is not bound-checked before beeing
copied into an insufficiently sized memory buffer. A
context-dependent attacker could supply a specially crafted input
file containing a long line to cause a stack-based buffer overlow,
resulting in a denial of service (application crash) or potentially
allowing the execution of arbitrary code.
CVE-2014-1236
Sebastian Krahmer reported an overflow condition in the chkNum()
function in lib/cgraph/scan.l that is triggered as the used regular
expression accepts an arbitrary long digit list. With a specially
crafted input file, a context-dependent attacker can cause a
stack-based buffer overflow, resulting in a denial of service
(application crash) or potentially allowing the execution of
arbitrary code.
For the oldstable distribution (squeeze), these problems have been fixed in
version 2.26.3-5+squeeze2.
For the stable distribution (wheezy), these problems have been fixed in
version 2.26.3-14+deb7u1.
For the unstable distribution (sid), these problems will be fixed soon.
We recommend that you upgrade your graphviz packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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