capi4k-utils: Buffer overflow — GLSA 200704-23

capi4k-utils is vulnerable to a buffer overflow in the bufprint() function.

Affected Packages

net-dialup/capi4k-utils on all architectures
Affected versions < 20050718-r3
Unaffected versions >= 20050718-r3

Background

capi4k-utils is a set of utilities for accessing COMMON-ISDN-API software interfaces for ISDN devices.

Description

The bufprint() function in capi4k-utils fails to properly check boundaries of data coming from CAPI packets.

Impact

A local attacker could possibly escalate privileges or cause a Denial of Service by sending a crafted CAPI packet.

Workaround

There is no known workaround at this time.

Resolution

All capi4k-utils users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-dialup/capi4k-utils-20050718-r3"

References

Release Date
April 27, 2007

Latest Revision
April 27, 2007: 01

Severity
high

Exploitable
local

Bugzilla entries