eix: Insecure temporary file creation — GLSA 200511-19

eix has an insecure temporary file creation vulnerability, potentially allowing a local user to overwrite arbitrary files.

Affected Packages

app-portage/eix on all architectures
Affected versions < 0.5.0_pre2
Unaffected versions >= 0.5.0_pre2, revision >= 0.3.0-r2

Background

eix is a small utility for searching ebuilds with indexing for fast results.

Description

Eric Romang discovered that eix creates a temporary file with a predictable name. eix creates a temporary file in /tmp/eix.*.sync where * is the process ID of the shell running eix.

Impact

A local attacker can watch the process list and determine the process ID of the shell running eix while the "emerge --sync" command is running, then create a link from the corresponding temporary file to a system file, which would result in the file being overwritten with the rights of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All eix users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose app-portage/eix

References

Release Date
November 22, 2005

Latest Revision
May 22, 2006: 02

Severity
normal

Exploitable
local

Bugzilla entries