GNU Radius rad_print_request denial of service

radius-radprintrequest-dos (15046) The risk level is classified as MediumMedium Risk

Description:

GNU Radius (Remote Authentication Dial In User Service) is vulnerable to a denial of service attack, caused by a vulnerability in the rad_print_request function of the lib/logger.c file. By sending a specially-crafted UDP packet that contains only an Acct-Status-Type attribute, a remote attacker could cause the Radius daemon (radiusd) to crash.


Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of GNU Radius (1.2 or later), available from the GNU Radius Web page. See References.

References:

  • GNU Radius Web page: Radius.
  • iDEFENSE Security Advisory 02.04.04: GNU Radius Remote Denial of Service Vulnerability.
  • BID-9578: GNU Radius Remote Denial Of Service Vulnerability
  • CVE-2004-0131: The rad_print_request function in logger.c for GNU Radius daemon (radiusd) before 1.2 allows remote atackers to cause a denial of service (crash) via a UDP packet with an Acct-Status-Type attribute without a value and no Acct-Session-Id attribute, which causes a null dereference.
  • OSVDB ID: 3824: GNU Radius rad_print_request DoS
  • SA10799: GNU Radius Denial of Service Vulnerability
  • US-CERT VU#277396: GNU Radius accounting service fails to properly handle exceptional Acct-Status-Type and Acct-Session-Id attributes

Platforms Affected:

  • Digital OSF/1
  • GNU Radius 1.1

Reported:

Feb 04, 2004

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