GNU Radius rad_print_request denial of service

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


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.


Denial of Service


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


Feb 04, 2004

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