libxml2: Denial of Service
1.
Gentoo Linux Security Advisory
Version Information
| Advisory Reference |
GLSA 201009-07 / libxml2 |
| Release Date |
September 21, 2010 |
| Latest Revision |
September 21, 2010: 01 |
| Impact |
normal |
| Exploitable |
remote |
| Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
| dev-libs/libxml2 |
<
2.7.3-r2 |
>=
2.7.3-r2 |
All supported architectures
|
Related bugreports:
#280617
Synopsis
Multiple Denial of Services vulnerabilities were found in libxml2.
2.
Impact Information
Background
libxml2 is a library to manipulate XML files.
Description
The following vulnerabilities were reported after a test with the
Codenomicon XML fuzzing framework:
-
Two use-after-free vulnerabilities are possible when parsing a XML file
with Notation or Enumeration attribute types (CVE-2009-2416).
-
A stack consumption vulnerability can be triggered via a large depth of
element declarations in a DTD, related to a function recursion
(CVE-2009-2414).
Impact
A remote attacker could entice a user or automated system to open a
specially crafted XML document with an application using libxml2
resulting in a Denial of Service condition.
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/libxml2-2.7.3-r2"
|
NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since August 30, 2009. It is likely that your system is
already no longer affected by this issue.
4.
References
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