Pidgin PurpleCircBuffer denial of service

pidgin-purplecircbuffer-dos (50683) The risk level is classified as MediumMedium Risk


Pidgin is vulnerable to a denial of service, caused by improper bounds checking by the PurpleCircBuffer structure. By sending specially-crafted XMPP or Sametime packets, a remote attacker could corrupt memory and cause the application to crash.


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


Denial of Service


Upgrade to the latest version of Pidgin (2.5.6 or later), available from the Pidgin Web site. See References.


  • Pidgin Web site: Remote DoS in multiple protocols.
  • ASA-2009-192: pidgin security update (RHSA-2009-1060)
  • BID-35067: Pidgin Multiple Buffer Overflow Vulnerabilities
  • CVE-2009-1375: The PurpleCircBuffer implementation in Pidgin (formerly Gaim) before 2.5.6 does not properly maintain a certain buffer, which allows remote attackers to cause a denial of service (memory corruption and application crash) via vectors involving the (1) XMPP or (2) Sametime protocol.
  • DSA-1805: pidgin -- several vulnerabilities
  • GLSA-200905-07: Pidgin: Multiple vulnerabilities
  • MDVSA-2009:147: pidgin
  • MDVSA-2009:321: pidgin
  • OSVDB ID: 54649: Pidgin XMPP / Sametime Protocol PurpleCircBuffer Remote DoS
  • RHSA-2009-1060: Important: pidgin security update
  • SA35194: Pidgin Multiple Vulnerabilities
  • SUSE-SR:2009:013: SUSE Security Summary Report
  • USN-781-1: Pidgin vulnerabilities

Platforms Affected:

  • Canonical Ubuntu 8.04 LTS
  • Canonical Ubuntu 8.10
  • Debian Debian Linux 5.0
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • Mandriva Linux 2009.0
  • Mandriva Linux 2009.0 X86_64
  • Mandriva Linux 2009.1
  • Mandriva Linux 2009.1 X86_64
  • Pidgin Pidgin 2.0.0
  • Pidgin Pidgin 2.0.1
  • Pidgin Pidgin 2.0.2
  • Pidgin Pidgin 2.1.0
  • Pidgin Pidgin 2.1.1
  • Pidgin Pidgin 2.2.0
  • Pidgin Pidgin 2.2.1
  • Pidgin Pidgin 2.2.2
  • Pidgin Pidgin 2.3.0
  • Pidgin Pidgin 2.3.1
  • Pidgin Pidgin 2.4.0
  • Pidgin Pidgin 2.4.1
  • Pidgin Pidgin 2.4.2
  • Pidgin Pidgin 2.4.3
  • Pidgin Pidgin 2.5.5
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4.8.z AS
  • RedHat Enterprise Linux 4.8.z ES
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5 Client


Mar 20, 2009

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