RHSA-2013:0646 - Security Advisory

Topic

Updated pidgin packages that fix three security issues are now available
for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

Description

Pidgin is an instant messaging program which can log in to multiple
accounts on multiple instant messaging networks simultaneously.

A stack-based buffer overflow flaw was found in the Pidgin MXit protocol
plug-in. A malicious server or a remote attacker could use this flaw to
crash Pidgin by sending a specially-crafted HTTP request. (CVE-2013-0272)

A buffer overflow flaw was found in the Pidgin Sametime protocol plug-in.
A malicious server or a remote attacker could use this flaw to crash Pidgin
by sending a specially-crafted username. (CVE-2013-0273)

A buffer overflow flaw was found in the way Pidgin processed certain UPnP
responses. A remote attacker could send a specially-crafted UPnP response
that, when processed, would crash Pidgin. (CVE-2013-0274)

Red Hat would like to thank the Pidgin project for reporting the above
issues. Upstream acknowledges Daniel Atallah as the original reporter of
CVE-2013-0272.

All Pidgin users should upgrade to these updated packages, which contain
backported patches to resolve these issues. Pidgin must be restarted for
this update to take effect.

Solution

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.4 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.9 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.9 i386
• Red Hat Enterprise Linux Server - AUS 6.4 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.4 ppc64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.9 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.9 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386

Fixes

• BZ - 910040 - CVE-2013-0272 pidgin: MXit protocol stack-based buffer overflow when processing HTTP headers
• BZ - 910041 - CVE-2013-0273 pidgin: Meanwhile protocol missing nul termination of long Lotus Sametime usernames
• BZ - 910042 - CVE-2013-0274 pidgin: missing nul termination of long values in UPnP responses

CVEs

• CVE-2013-0274
• CVE-2013-0272
• CVE-2013-0273

References

• https://access.redhat.com/security/updates/classification/#moderate