The mod_auth_mellon module before 0.8.1 allows remote attackers to obtain sensitive information or cause a denial of service (segmentation fault) via unspecified vectors related to a "session overflow" involving "sessions overlapping in memory."

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)

An updated mod_auth_mellon package that fixes two security issues is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Important 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.

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.

The remote Oracle Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2014-1803 advisory.

    - CVE-2014-8566 CVE-2014-8567

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
79081	Scientific Linux Security Update : mod_auth_mellon on SL6.x i386/x86_64 (20141105)	Nessus	Scientific Linux Local Security Checks	high
78884	RHEL 6 : mod_auth_mellon (RHSA-2014:1803)	Nessus	Red Hat Local Security Checks	high
78883	Oracle Linux 6 : mod_auth_mellon (ELSA-2014-1803)	Nessus	Oracle Linux Local Security Checks	high
78876	CentOS 6 : mod_auth_mellon (CESA-2014:1803)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2014-8566

critical

Tenable Plugins

high

high

high

high