UW-imapd rfc822_output_char() denial of service

uwimapd-rfc822outputchar-dos (47526) The risk level is classified as MediumMedium Risk

Description:

UW-imapd is vulnerable to a denial of service, caused by an off-by-one error in the rfc822_output_char() function within the c-client library. A remote attacker could exploit this vulnerability to overflow a buffer with one byte and cause a segmentation fault on the application using the library.

*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:

Upgrade to the latest version of UW-imapd (2007e or later), available from the UW IMAP Server Web site. See References.

References:

  • Red Hat Bugzilla Bug 477227: (CVE-2008-5514) CVE-2008-5514 libc-client: buffer overflow in rfc822_output_char / rfc822_output_data.
  • UW IMAP Server Web site: UW IMAP Server Documentation, Updated: 16 December 2008 .
  • BID-32958: University of Washington IMAP c-client Buffer Overflow Vulnerability
  • CVE-2008-5514: Off-by-one error in the rfc822_output_char function in the RFC822BUFFER routines in the University of Washington (UW) c-client library, as used by the UW IMAP toolkit before imap-2007e and other applications, allows context-dependent attackers to cause a denial of service (crash) via an e-mail message that triggers a buffer overflow.
  • GLSA-201001-03: PHP: Multiple vulnerabilities
  • MDVSA-2009:146: imap
  • MDVSA-2009:146-1: imap
  • OSVDB ID: 52905: UW-imapd c-client Library RFC822BUFFER Routines rfc822_output_char Function Off-by-one
  • SA33275: UW-imapd c-client Library Off-by-one Vulnerability
  • SECTRACK ID: 1021485: uw-imap Client Library Bug Lets Remote Users Deny Service
  • SUSE-SR:2009:001: SUSE Security Summary Report
  • VUPEN/ADV-2008-3490: UW-imapd C-client Library rfc822_output_char() Off-by-One Vulnerability

Platforms Affected:

  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • Mandriva Linux 2009.0 X86_64
  • Mandriva Linux 2009.0
  • University of Washington UW-imapd 2000a
  • University of Washington UW-imapd 2000b
  • University of Washington UW-imapd 2000c
  • University of Washington UW-imapd 2001
  • University of Washington UW-imapd 2001a
  • University of Washington UW-imapd 2002
  • University of Washington UW-imapd 2002a
  • University of Washington UW-imapd 2002b
  • University of Washington UW-imapd 2002c
  • University of Washington UW-imapd 2002d
  • University of Washington UW-imapd 2002e
  • University of Washington UW-imapd 2004
  • University of Washington UW-imapd 2004a
  • University of Washington UW-imapd 2004c
  • University of Washington UW-imapd 2004d
  • University of Washington UW-imapd 2004e
  • University of Washington UW-imapd 2004f
  • University of Washington UW-imapd 2004g
  • University of Washington UW-imapd 2006
  • University of Washington UW-imapd 2006a
  • University of Washington UW-imapd 2006b
  • University of Washington UW-imapd 2006c
  • University of Washington UW-imapd 2006d
  • University of Washington UW-imapd 2006e
  • University of Washington UW-imapd 2006f
  • University of Washington UW-imapd 2006g
  • University of Washington UW-imapd 2006h
  • University of Washington UW-imapd 2006i
  • University of Washington UW-imapd 2006j
  • University of Washington UW-imapd 2006k
  • University of Washington UW-imapd 2007
  • University of Washington UW-imapd 2007a
  • University of Washington UW-imapd 2007b
  • University of Washington UW-imapd 2007d

Reported:

Dec 16, 2008

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