Info

Last Modified

7 months ago

Percent Complete

100%

Disclosure

Sep 15, 1997

Discovery

Unknown

Dates

Exploit

Unknown

Solution

Unknown

Description

Certain BSD-derived kernels contain a flaw that may allow a local denial of service. The issue is triggered when a malicious user sends signals to arbitrary processes via certain ioctl and fcntl system calls to interrupt or kill processes, resulting in loss of availability for the service or platform.

Classification

Location: Local Access Required
Attack Type: Denial of Service, Input Manipulation, Misconfiguration
Impact: Loss of Integrity, Loss of Availability
Exploit: Exploit Unavailable
Disclosure: OSVDB Verified

Technical

Surgical application of this vulnerability can be used to compromise the
system - for example, a process holding a bound address (NFS port 2049,
for instance) can be killed off and it's port stolen; this can be used to
steal NFS file handles.

Solution

Upgrade to OpenBSD version 2.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

For all others, there are no known upgrades, patches, or workarounds available to correct this issue.