libxml2: Multiple vulnerabilities
1.
Gentoo Linux Security Advisory
Version Information
| Advisory Reference |
GLSA 200812-06 / libxml2 |
| Release Date |
December 02, 2008 |
| Latest Revision |
December 02, 2008: 01 |
| Impact |
normal |
| Exploitable |
remote |
| Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
| dev-libs/libxml2 |
<
2.7.2-r1 |
>=
2.7.2-r1 |
All supported architectures
|
Related bugreports:
#234099, #237806, #239346, #245960
Synopsis
Multiple vulnerabilities in libxml2 might lead to execution of arbitrary
code or Denial of Service.
2.
Impact Information
Background
libxml2 is the XML (eXtended Markup Language) C parser and toolkit
initially developed for the Gnome project.
Description
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).
Impact
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.
3.
Resolution Information
Workaround
There is no known workaround at this time.
Resolution
All libxml2 users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.2-r1"
|
4.
References
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