Quagga BGP attributes denial of service

quagga-bgpattributes-dos (33547) The risk level is classified as MediumMedium Risk

Description:

Quagga is vulnerable to a denial of service, caused by improper bounds checking of the BGP attributes by the bgpd daemon. By sending a specially-crafted UPDATE message, a remote attacker could exploit this vulnerability to cause an assertion error, resulting in a denial of service.

*CVSS:

Base Score: 3.5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 2.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to Quagga Bugzilla Bug 354 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux:
Refer to GLSA 200705-05 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux (quagga):
Refer to DSA-1293-1 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux (quagga):
Refer to USN-461-1 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (quagga):
Refer to RHSA-2007:0389 for patch, upgrade, or suggested workaround information. See References.

For Sun Solaris 10 x86 and SPARC:
Refer to Sun Alert ID: 236141 for patch, upgrade, or suggested workaround information. See References.

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

References:

  • Quagga Bugzilla Bug 354 : bgpd vulnerable to DoS by configured peers.
  • Quagga Web site: Quagga Software Routing Suite.
  • Sun Alert ID: 236141: Security Vulnerabilities in the GNU Zebra and Quagga BGP Routing Daemon May Allow for Denial of Service.
  • ASA-2007-216: quagga security update (RHSA-2007-0389)
  • ASA-2008-176: Security Vulnerabilities in the GNU Zebra and Quagga BGP Routing Daemon May Allow for Denial of Service (Sun 236141)
  • BID-23417: Quagga BGPD UPDATE Message Remote Denial Of Service Vulnerability
  • CVE-2007-1995: bgpd/bgp_attr.c in Quagga 0.98.6 and earlier, and 0.99.6 and earlier 0.99 versions, does not validate length values in the MP_REACH_NLRI and MP_UNREACH_NLRI attributes, which allows remote attackers to cause a denial of service (daemon crash or exit) via crafted UPDATE messages that trigger an assertion error or out of bounds read.
  • DSA-1293: quagga -- out of boundary read
  • GLSA-200705-05: Quagga: Denial of Service
  • MDKSA-2007:096: Updated quagga packages fix DoS vulnerability
  • OpenPKG-SA-2007.015: Quagga
  • RHSA-2007-0389: Moderate: quagga security update
  • SA24808: Quagga "reachable/unreachable" NLRI Attributes Denial of Service
  • SA29743: Sun Solaris Quagga Multiple Denial of Service Vulnerabilities
  • SECTRACK ID: 1018142: Quagga bgpd Server Can Be Crashed By Remote Users
  • USN-461-1: Quagga vulnerability

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 6.10
  • Canonical Ubuntu 7.04
  • Debian Debian Linux 3.1
  • Debian Debian Linux 4.0
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • OpenPKG OpenPKG CURRENT
  • OpenPKG OpenPKG Enterprise E1.0-SOLID
  • Quagga Quagga
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4.5.z ES
  • RedHat Enterprise Linux 4.5.z AS
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Server
  • RedHat Enterprise Linux Desktop 5.0
  • Sun Solaris 10 SPARC
  • Sun Solaris 10 x86

Reported:

Apr 09, 2007

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