RHSA-2009:1572 - Security Advisory

Topic

An updated 4Suite package that fixes one security issue is now available
for Red Hat Enterprise Linux 3 and 4.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Description

The 4Suite package contains XML-related tools and libraries for Python,
including 4DOM, 4XSLT, 4XPath, 4RDF, and 4XPointer.

A buffer over-read flaw was found in the way 4Suite's XML parser handles
malformed UTF-8 sequences when processing XML files. A specially-crafted
XML file could cause applications using the 4Suite library to crash while
parsing the file. (CVE-2009-3720)

Note: In Red Hat Enterprise Linux 3, this flaw only affects a non-default
configuration of the 4Suite package: configurations where the beta version
of the cDomlette module is enabled.

All 4Suite users should upgrade to this updated package, which contains a
backported patch to correct this issue. After installing the updated
package, applications using the 4Suite XML-related tools and libraries must
be restarted for the update to take effect.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.8 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.8 ppc

Fixes

• BZ - 531697 - CVE-2009-3720 expat: buffer over-read and crash on XML with malformed UTF-8 sequences

CVEs

• CVE-2009-3720

References

• http://www.redhat.com/security/updates/classification/#moderate