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CVE-2012-5536

Status Candidate

Overview

A certain Red Hat build of the pam_ssh_agent_auth module on Red Hat Enterprise Linux (RHEL) 6 and Fedora Rawhide calls the glibc error function instead of the error function in the OpenSSH codebase, which allows local users to obtain sensitive information from process memory or possibly gain privileges via crafted use of an application that relies on this module, as demonstrated by su and sudo.

Related Files

Red Hat Security Advisory 2013-0519-02
Posted Feb 21, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0519-02 - OpenSSH is OpenBSD's Secure Shell protocol implementation. These packages include the core files necessary for the OpenSSH client and server. Due to the way the pam_ssh_agent_auth PAM module was built in Red Hat Enterprise Linux 6, the glibc's error() function was called rather than the intended error() function in pam_ssh_agent_auth to report errors. As these two functions expect different arguments, it was possible for an attacker to cause an application using pam_ssh_agent_auth to crash, disclose portions of its memory or, potentially, execute arbitrary code.

tags | advisory, arbitrary, shell, protocol
systems | linux, redhat, openbsd
advisories | CVE-2012-5536
SHA-256 | fb4c0807ded976e32bae9182da0fa9a8423f588150cae073a4d4482f9e4f8d2a
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