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Red Hat: RHSA-2009:1206-01 Moderate: libxml and libxml2 DoS Threat

red hat
Calendar Grey August 10, 2009
Dist Redhat Esm H88
Canonical has released a significant security notice regarding the libcurl and libcurl3 libraries, focusing on severe vulnerabilities that could lead to Denial of Service attacks.
Updated libxml and libxml2 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3, 4, and 5. This update has been rated as having moderate sec...

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

libxml is a library for parsing and manipulating XML files. A Document Type Definition (DTD) defines the legal syntax (and also which elements can be used) for certain types of files, such as XML files.
A stack overflow flaw was found in the way libxml processes the root XML document element definition in a DTD. A remote attacker could provide a specially-crafted XML file, which once opened by a local, unsuspecting user, would lead to denial of service (application crash). (CVE-2009-2414)
Multiple use-after-free flaws were found in the way libxml parses the Notation and Enumeration attribute types. A remote attacker could provide a specially-crafted XML file, which once opened by a local, unsuspecting user, would lead to denial of service (application crash). (CVE-2009-2416)
Users should upgrade to these updated packages, which contain backported patches to resolve these issues. For Red Hat Enterprise Linux 3, they contain backported patches for the libxml and libxml2 packages. For Red Hat Enterprise Linux 4 and 5, they contain backported patches for the libxml2 packages. The desktop must be restarted (log out, then log back in) for this update to take effect.

Topics%20covered

Topics Covered

security advisory security update Red Hat DoS moderate impact libxml2 libxml

References

https://www.cve.org/CVERecord?id=CVE-2009-2414 https://www.cve.org/CVERecord?id=CVE-2009-2416 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AS version 3:
Source:
i386: libxml-1.8.17-9.3.i386.rpm libxml-debuginfo-1.8.17-9.3.i386.rpm libxml-devel-1.8.17-9.3.i386.rpm libxml2-2.5.10-15.i386.rpm libxml2-debuginfo-2.5.10-15.i386.rpm libxml2-devel-2.5.10-15.i386.rpm libxml2-python-2.5.10-15.i386.rpm
ia64: libxml-1.8.17-9.3.i386.rpm libxml-1.8.17-9.3.ia64.rpm libxml-debuginfo-1.8.17-9.3.i386.rpm libxml-debuginfo-1.8.17-9.3.ia64.rpm libxml-devel-1.8.17-9.3.ia64.rpm libxml2-2.5.10-15.i386.rpm libxml2-2.5.10-15.ia64.rpm libxml2-debuginfo-2.5.10-15.i386.rpm libxml2-debuginfo-2.5.10-15.ia64.rpm libxml2-devel-2.5.10-15.ia64.rpm libxml2-python-2.5.10-15.ia64.rpm
ppc: libxml-1.8.17-9.3.ppc.rpm libxml-1.8.17-9.3.ppc64.rpm libxml-debuginfo-1.8.17-9.3.ppc.rpm libxml-debuginfo-1.8.17-9.3.ppc64.rpm libxml-devel-1.8.17-9.3.ppc.rpm libxml2-2.5.10-15.ppc.rpm libxml2-2.5.10-15.ppc64.rpm libxml2-debuginfo-2.5.10-15.ppc.rpm libxml2-debuginfo-2.5.10-15.ppc64.rpm libxml2-devel-2.5.10-15.ppc.rpm libxml2-python-2.5.10-15.ppc.rpm
s390: libxml-1.8.17-9.3.s390.rpm libxml-debuginfo-1.8.17-9.3.s390.rpm libxml-devel-1.8.17-9.3.s390.rpm libxml2-2.5.10-15.s390.rpm libxml2-debuginfo-2.5.10-15.s390.rpm libxml2-devel-2.5.10-15.s390.rpm libxml2-python-2.5.10-15.s390.rpm
s390x: libxml-1.8.17-9.3.s390.rpm

Read the Full Advisory


Advisory ID: RHSA-2009:1206-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:1206.html
Issue date: 2009-08-10

Topic

Updated libxml and libxml2 packages that fix multiple security issues arenow available for Red Hat Enterprise Linux 3, 4, and 5.This update has been rated as having moderate security impact by the RedHat Security Response Team.

Topics%20covered

Topics Covered

security advisory security update Red Hat DoS moderate impact libxml2 libxml

Relevant Releases Architectures

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

515195 - CVE-2009-2414 libxml, libxml2, mingw32-libxml2: Stack overflow by parsing root XML element DTD definition

515205 - CVE-2009-2416 libxml, libxml2, mingw32-libxml2: Pointer use-after-free flaws by parsing Notation and Enumeration attribute types

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