APC apcupsd denial of service

apc-apcupsd-dos (5654) The risk level is classified as MediumMedium Risk

Description:

Apcupsd creates a world-writable file "apcupsd.pid" under /var/run/ at startup, which is used by the daemon's scripts to stop the apcupsd process during a restart or shutdown. A local attacker can overwrite the apcupsd.pid file with an arbitrary process ID to cause the system to crash, during restart or shutdown.

Platforms Affected:

  • APC, Apcupsd 3.7.2

Remedy:

Upgrade to the latest version of apcupsd (3.8.0 or later), available from the APC UPS Daemon Web site. See References.

For Linux-Mandrake 7.2:
Upgrade to the latest version of apcupsd (3.8.0-1 or later), as listed in MandrakeSoft Security Advisory MDKSA-2000:077 : apcupsd. See References.

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

Consequences:

Denial of Service

References:

Reported:

Dec 06, 2000

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