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Debian Security Advisory DSA 3984-1 (git - security update)

Information

Severity

Severity

Critical

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

9.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

2 years ago

Summary

joernchen discovered that the git-cvsserver subcommand of Git, a distributed version control system, suffers from a shell command injection vulnerability due to unsafe use of the Perl backtick operator. The git-cvsserver subcommand is reachable from the git-shell subcommand even if CVS support has not been configured (however, the git-cvs package needs to be installed). In addition to fixing the actual bug, this update removes the cvsserver subcommand from git-shell by default. Refer to the updated documentation for instructions how to re-enable in case this CVS functionality is still needed.

Affected Software

Affected Software

git on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

For the oldstable distribution (jessie), this problem has been fixed in version 1:2.1.4-2.1+deb8u5. For the stable distribution (stretch), this problem has been fixed in version 1:2.11.0-3+deb9u2. For the unstable distribution (sid), this problem has been fixed in version 1:2.14.2-1. We recommend that you upgrade your git packages.

Common Vulnerabilities and Exposures (CVE)