Joined: 12 May 2004
|Posted: Tue Dec 02, 2008 11:26 pm Post subject: [ GLSA 200812-06 ] libxml2: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: libxml2: Multiple vulnerabilities (GLSA 200812-06)
Date: December 02, 2008
Bug(s): #234099, #237806, #239346, #245960
Multiple vulnerabilities in libxml2 might lead to execution of arbitrary code or Denial of Service.
libxml2 is the XML (eXtended Markup Language) C parser and toolkit initially developed for the Gnome project.
Vulnerable: < 2.7.2-r1
Unaffected: >= 2.7.2-r1
Architectures: All supported architectures
Multiple vulnerabilities were reported in libxml2:
- Andreas Solberg reported that libxml2 does not properly detect recursion during entity expansion in an attribute value (CVE-2008-3281).
- A heap-based buffer overflow has been reported in the xmlParseAttValueComplex() function in parser.c (CVE-2008-3529).
- Christian Weiske reported that predefined entity definitions in entities are not properly handled (CVE-2008-4409).
- Drew Yao of Apple Product Security reported an integer overflow in the xmlBufferResize() function that can lead to an infinite loop (CVE-2008-4225).
- Drew Yao of Apple Product Security reported an integer overflow in the xmlSAX2Characters() function leading to a memory corruption (CVE-2008-4226).
A remote attacker could entice a user or automated system to open a specially crafted XML document with an application using libxml2, possibly resulting in the exeution of arbitrary code or a high CPU and memory consumption.
There is no known workaround at this time.
All libxml2 users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.2-r1"