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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2007:0540

The remote host is missing updates announced in
advisory RHSA-2007:0540.

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client and

A flaw was found in the way the ssh server wrote account names to the audit
subsystem. An attacker could inject strings containing parts of audit
messages, which could possibly mislead or confuse audit log parsing tools.

A flaw was found in the way the OpenSSH server processes GSSAPI
authentication requests. When GSSAPI authentication was enabled in the
OpenSSH server, a remote attacker was potentially able to determine if a
username is valid. (CVE-2006-5052)

The following bugs in SELinux MLS (Multi-Level Security) support has also
been fixed in this update:

* It was sometimes not possible to select a SELinux role and level when
logging in using ssh.

* If the user obtained a non-default SELinux role or level, the role change
was not recorded in the audit subsystem.

* In some cases, on labeled networks, sshd allowed logins from level ranges
it should not allow.

The updated packages also contain experimental support for using private
keys stored in PKCS#11 tokens for client authentication. The support is
provided through the NSS (Network Security Services) library.

All users of openssh should upgrade to these updated packages, which
contain patches to correct these issues.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Medium

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2006-5052
BugTraq ID: 20245
Bugtraq: 20061005 rPSA-2006-0185-1 gnome-ssh-askpass openssh openssh-client openssh-server (Google Search)
Cert/CC Advisory: TA07-072A
RedHat Security Advisories: RHSA-2006:0697
SuSE Security Announcement: SUSE-SA:2006:062 (Google Search)
XForce ISS Database: openssh-gssapi-user-enumeration(29255)
Common Vulnerability Exposure (CVE) ID: CVE-2007-3102
BugTraq ID: 26097
CopyrightCopyright (c) 2007 E-Soft Inc.

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