Mutt GECOS buffer overflow

mutt-gecos-bo (34441) The risk level is classified as HighHigh Risk

Description:

Mutt is vulnerable to a buffer overflow, caused by improper bounds checking. By sending multiple "&" characters in the GECOS field, a local attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges.

Note: In order to execute code on the system with elevated privileges, the attacker would first need to have a real name in an authenticated alias file.

*CVSS:

Base Score: 3.9
  Access Vector: Local
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 2.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Uncorroborated

Consequences:

Gain Privileges

Remedy:

For Red Hat Linux (mutt):
Refer to RHSA-2007:0386 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (mutt):
Refer to MDKSA-2007:113 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • Mutt Web site: The Mutt E-Mail Client.
  • Red Hat Bugzilla Bug 239890: Buffer overflow in mutt's gecos structure handling.
  • ASA-2007-296: Mutt security update (RHSA-2007-0386)
  • BID-24192: Mutt Mutt_Gecos_Name Function Local Buffer Overflow Vulnerability
  • CVE-2007-2683: Buffer overflow in Mutt 1.4.2 might allow local users to execute arbitrary code via & characters in the GECOS field, which triggers the overflow during alias expansion.
  • MDKSA-2007:113: Updated mutt packages fix vulnerabilities
  • OSVDB ID: 34973: Mutt GECOS Field Alias Expansion Overflow
  • RHSA-2007-0386: Moderate: mutt security update
  • SA25408: Mutt GECOS Name Processing Buffer Overflow Vulnerability
  • SECTRACK ID: 1018066: Mutt mutt_gecos_name() Buffer Overflow May Let Local Users Gain Elevated Privileges

Platforms Affected:

  • MandrakeSoft Mandrake Linux 2007
  • MandrakeSoft Mandrake Linux 2007 X86_64
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • Michael R. Elkins and Jeremy Blosser Mutt 1.4.2
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4.5.z ES
  • RedHat Enterprise Linux 4.5.z AS
  • RedHat Enterprise Linux 5 Server
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux Desktop 5.0

Reported:

May 11, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Security Systems

IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.