RHSA-2012:1539 - Security Advisory

Topic

An updated jabberd package that fixes one security issue is now available
for Red Hat Network Proxy 5.5 for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

This package provides jabberd 2, an Extensible Messaging and Presence
Protocol (XMPP) server used for XML based communication.

It was discovered that the XMPP Dialback protocol implementation in
jabberd 2 did not properly validate Verify Response and Authorization
Response messages. A remote attacker able to connect to the jabberd's
server-to-server communication port could possibly use this flaw to spoof
source domains of the XMPP messages. (CVE-2012-3525)

Users of Red Hat Network Proxy 5.5 are advised to upgrade to this updated
jabberd package, which resolves this issue. For this update to take effect,
Red Hat Network Proxy must be restarted. Refer to the Solution section for
details.

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

Run the following command to restart the Red Hat Network Proxy server:

# rhn-proxy restart

Affected Products

• Red Hat Satellite Proxy 5.5 for RHEL 6 x86_64
• Red Hat Satellite Proxy 5.5 for RHEL 6 s390x
• Red Hat Satellite Proxy 5.5 for RHEL 5 x86_64
• Red Hat Satellite Proxy 5.5 for RHEL 5 s390x

Fixes

• BZ - 850872 - CVE-2012-3525 jabberd: Prone to unsolicited XMPP Dialback attacks

CVEs

• CVE-2012-3525

References

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