Zebra telnet management service denial of service

zebra-telnet-mngmt-dos (13758) The risk level is classified as MediumMedium Risk

Description:

Zebra is vulnerable to a denial of service. A remote attacker could connect to the Telnet management port and cause the service to crash, if a Zebra password has been enabled.

Note: Quagga is also affected by this vulnerability.


Consequences:

Denial of Service

Remedy:

For Red Hat Linux:
Upgrade to the latest zebra package, as listed below. Refer to RHSA-2003:307-09 for more information. See References.

Red Hat 7.2: 0.91a-8.7.2 or later
Red Hat 7.3: 0.92a-5.7.3 or later
Red Hat 8.0: 0.93a-5.8.0 or later
Red Hat 9: 0.93b-4.9 or later

For Conectiva Linux:
Upgrade to the latest zebra package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2003:786 for more information. See References.

Conectiva Linux 9: 0.93b-27301U90_1cl or later

For OpenPKG:
Upgrade to the latest zebra package, as listed below. Refer to OpenPKG Security Advisory OpenPKG-SA-2003.049 for more information. See References.

OpenPKG CURRENT: 0.93b-20031113 or later
OpenPKG 1.2: 0.93b-1.2.1 or later
OpenPKG 1.3: 0.93b-1.3.1 or later

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest zebra package (0.92a-5woody2 or later), as listed in DSA-415-1. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

Platforms Affected:

  • Conectiva Linux 9.0
  • Debian Debian Linux 3.0
  • GNU Zebra
  • OpenPKG OpenPKG 1.2
  • OpenPKG OpenPKG 1.3
  • OpenPKG OpenPKG CURRENT
  • Quagga Quagga prior to 0.96.4
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Linux 7.2
  • RedHat Linux 7.3
  • RedHat Linux 8.0
  • RedHat Linux 9.0
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Nov 13, 2003

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