git: git-daemon Denial of service

Background

git - the stupid content tracker, the revision control system used by the Linux kernel team.

Description

Shawn O. Pearce reported that git-daemon runs into an infinite loop when handling requests that contain unrecognized arguments.

Impact

A remote unauthenticated attacker could send a specially crafted request to git-daemon, possibly leading to a Denial of Service (CPU consumption).

Workaround

There is no known workaround at this time.

Resolution

All git users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-util/git-1.6.3.3"