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Red Hat: RHSA-2008:0988-01 Critical: libxml2 Heap Overflow

red hat
Calendar Grey November 17, 2008
Dist Redhat Esm H88
Crucial libxml2 patch released for Red Hat Enterprise Linux, featuring vital fixes to remedy severe vulnerabilities.
Updated libxml2 packages that fix security issues are now available for Red Hat Enterprise Linux 2.1, 3, 4, and 5. This update has been rated as having important security impact ...

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

Summary

libxml2 is a library for parsing and manipulating XML files. It includes support for reading, modifying, and writing XML and HTML files.
An integer overflow flaw causing a heap-based buffer overflow was found in the libxml2 XML parser. If an application linked against libxml2 processed untrusted, malformed XML content, it could cause the application to crash or, possibly, execute arbitrary code. (CVE-2008-4226)
A denial of service flaw was discovered in the libxml2 XML parser. If an application linked against libxml2 processed untrusted, malformed XML content, it could cause the application to enter an infinite loop. (CVE-2008-4225)
Red Hat would like to thank Drew Yao of the Apple Product Security team for reporting these issues.
Users of libxml2 are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Red Hat Enterprise Linux critical flaw libxml2 update XML parser issue

References

https://www.cve.org/CVERecord?id=CVE-2008-4225 https://www.cve.org/CVERecord?id=CVE-2008-4226 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :
Source:
i386: libxml2-2.4.19-12.ent.i386.rpm libxml2-devel-2.4.19-12.ent.i386.rpm libxml2-python-2.4.19-12.ent.i386.rpm
ia64: libxml2-2.4.19-12.ent.ia64.rpm libxml2-devel-2.4.19-12.ent.ia64.rpm libxml2-python-2.4.19-12.ent.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
Source:
ia64: libxml2-2.4.19-12.ent.ia64.rpm libxml2-devel-2.4.19-12.ent.ia64.rpm libxml2-python-2.4.19-12.ent.ia64.rpm
Red Hat Enterprise Linux ES version 2.1:
Source:
i386: libxml2-2.4.19-12.ent.i386.rpm libxml2-devel-2.4.19-12.ent.i386.rpm libxml2-python-2.4.19-12.ent.i386.rpm
Red Hat Enterprise Linux WS version 2.1:
Source:
i386: libxml2-2.4.19-12.ent.i386.rpm libxml2-devel-2.4.19-12.ent.i386.rpm libxml2-python-2.4.19-12.ent.i386.rpm
Red Hat Enterprise Linux AS version 3:
Source:
i386: libxml2-2.5.10-14.i386.rpm libxml2-debuginfo-2.5.10-14.i386.rpm libxml2-devel-2.5.10-14.i386.rpm libxml2-python-2.5.10-14.i386.rpm
ia64: libxml2-2.5.10-14.i386.rpm libxml2-2.5.10-14.ia64.rpm libxml2-debuginfo-2.5.10-14.i386.rpm libxml2-debuginfo-2.5.10-14.ia64.rpm libxml2-devel-2.5.10-14.ia64.rpm libxml2-python-2.5.10-14.ia64.rpm
ppc: libxml2-2.5.10-14.ppc.rpm libxml2-2.5.10-14.ppc64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2008:0988-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0988.html
Issue date: 2008-11-17

Topic

Updated libxml2 packages that fix security issues are now available for Red Hat Enterprise Linux 2.1, 3, 4, and 5.

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

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Red Hat Enterprise Linux critical flaw libxml2 update XML parser issue

Relevant Releases Architectures

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64

Red Hat Linux Advanced Workstation 2.1 - ia64

Red Hat Enterprise Linux ES version 2.1 - i386

Red Hat Enterprise Linux WS version 2.1 - i386

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

470466 - CVE-2008-4226 libxml2: integer overflow leading to memory corruption in xmlSAX2Characters

470480 - CVE-2008-4225 libxml2: integer overflow leading to infinite loop in xmlBufferResize

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