Fetchmail verbose log message denial of service

fetchmail-logmessage-dos (43121) The risk level is classified as LowLow Risk

Description:

Fetchmail is vulnerable to a denial of service, caused by a pointer dereference error when parsing large log messages in verbose mode. A remote attacker could exploit this vulnerability using a specially-crafted email containing overly long headers to crash the application.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to Novell Bugzilla Bug 354291 for patch, upgrade or suggested workaround information. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Apple Web site: About the security content of Security Update 2009-001 .
  • Fetchmail Web site: Fetchmail.
  • fetchmail-SA-2008-01: Crash on large log messages in verbose mode.
  • gmane Mailing List, Matthias Andree | 13 Jun 18:10: CVE Id Request: fetchmail <= 6.3.8 DoS when logging long headers in -v -v mode.
  • Novell Bugzilla Bug 354291: fetchmail Segmentation fault.
  • BID-29705: Fetchmail Verbose Mode Large Log Messages Remote Denial of Service Vulnerability
  • CVE-2008-2711: fetchmail 6.3.8 and earlier, when running in -v -v (aka verbose) mode, allows remote attackers to cause a denial of service (crash and persistent mail failure) via a malformed mail message with long headers, which triggers an erroneous dereference when using vsnprintf to format log messages.
  • MDVSA-2008:117: Updated fetchmail packages fix DoS vulnerability
  • RHSA-2009-1427: Moderate: fetchmail security update
  • SA30742: Fetchmail Large Header Processing Denial of Service
  • SA33937: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1020298: Fetchmail Verbose Logging Bug Lets Remote Users Deny Service
  • VUPEN/ADV-2008-1860: Fetchmail Header Processing Remote Denial of Service Vulnerability
  • VUPEN/ADV-2009-0422: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities

Platforms Affected:

  • Apple Mac OS X 10.4.11
  • Apple Mac OS X 10.5.6
  • Apple Mac OS X Server 10.4.11
  • Apple Mac OS X Server 10.5.6
  • Eric S. Raymond Fetchmail 6.3.8
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client Workstation

Reported:

Jun 13, 2008

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