Mgetty: Insecure temporary file usage — GLSA 200812-08

Mgetty uses temporary files in an insecure manner, allowing for symlink attacks.

Affected Packages

net-dialup/mgetty on all architectures
Affected versions < 1.1.36-r3
Unaffected versions >= 1.1.36-r3

Background

Mgetty is a set of fax and voice modem programs.

Description

Dmitry E. Oboukhov reported that the "spooldir" directory in fax/faxspool.in is created in an insecure manner.

Impact

A local attacker could exploit this vulnerability to overwrite arbitrary files with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All Mgetty users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-dialup/mgetty-1.1.36-r3"

References

Release Date
December 06, 2008

Latest Revision
December 23, 2008: 02

Severity
normal

Exploitable
local

Bugzilla entries