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Red Hat: RHSA-2014:1803-01 Important mod_auth_mellon DoS Threat

red hat
Calendar Grey November 5, 2014
Dist Redhat Esm H88
The latest advisory from Red Hat regarding mod_auth_mellon rectifies significant vulnerabilities and bolsters overall system security.
An updated mod_auth_mellon package that fixes two security issues is now available for Red Hat Enterprise Linux 6

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/articles/11258

Summary

mod_auth_mellon provides a SAML 2.0 authentication module for the Apache HTTP Server.
An information disclosure flaw was found in mod_auth_mellon's session handling that could lead to sessions overlapping in memory. A remote attacker could potentially use this flaw to obtain data from another user's session. (CVE-2014-8566)
It was found that uninitialized data could be read when processing a user's logout request. By attempting to log out, a user could possibly cause the Apache HTTP Server to crash. (CVE-2014-8567)
Red Hat would like to thank the mod_auth_mellon team for reporting these issues. Upstream acknowledges Matthew Slowe as the original reporter of CVE-2014-8566.
All users of mod_auth_mellon are advised to upgrade to this updated package, which contains a backported patch to correct these issues.

Topics%20covered

Topics Covered

security advisory Red Hat DoS important information disclosure session management mod_auth_mellon

References

https://access.redhat.com/security/cve/CVE-2014-8566 https://access.redhat.com/security/cve/CVE-2014-8567 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server (v. 6):
Source: mod_auth_mellon-0.8.0-3.el6_6.src.rpm
i386: mod_auth_mellon-0.8.0-3.el6_6.i686.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.i686.rpm
ppc64: mod_auth_mellon-0.8.0-3.el6_6.ppc64.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.ppc64.rpm
s390x: mod_auth_mellon-0.8.0-3.el6_6.s390x.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.s390x.rpm
x86_64: mod_auth_mellon-0.8.0-3.el6_6.x86_64.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: mod_auth_mellon-0.8.0-3.el6_6.src.rpm
i386: mod_auth_mellon-0.8.0-3.el6_6.i686.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.i686.rpm
x86_64: mod_auth_mellon-0.8.0-3.el6_6.x86_64.rpm mod_auth_mellon-debuginfo-0.8.0-3.el6_6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:1803-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:1803.html
Issue date: 2014-11-05

Topic

An updated mod_auth_mellon package that fixes two security issues is nowavailable for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat DoS important information disclosure session management mod_auth_mellon

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1157281 - CVE-2014-8566 mod_auth_mellon: remote memory disclosure flaw

1157954 - CVE-2014-8567 mod_auth_mellon: logout processing leads to denial of service

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