OpenBSD link(2) can be used to crash the system
| openbsd-link-crash (1827) |  Medium Risk |
Description:
The FFS link(2) library function in OpenBSD is vulnerable to a denial of service attack, caused by a vulnerability when an unbounded increment is made on the nlink value. A local attacker can use this vulnerability to crash the system under some circumstances.
Platforms Affected:
- OpenBSD, OpenBSD 2.4
Remedy:
Apply the patch for this vulnerability, as listed in OpenBSD Security Advisory, February 25, 1999. See References.
Consequences:
Denial of Service
References:
- OpenBSD Security Advisory, February 25, 1999, An unbounded increment on the nlink value in FFS and EXT2FS filesystems can cause a system crash. at http://www.openbsd.com/security.html#25.
- CVE-1999-0483: OpenBSD crash using nlink value in FFS and EXT2FS filesystems.
- OSVDB ID: 6129: OpenBSD FFS and EXT2FS Filesystems nlink DoS
Reported:
Feb 25, 1999
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