Debian Security Advisory

DSA-1841-1 git-core -- denial of service

Date Reported:
25 Jul 2009
Affected Packages:
git-core
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 532935.
In Mitre's CVE dictionary: CVE-2009-2108.
More information:

It was discovered that git-daemon which is part of git-core, a popular distributed revision control system, is vulnerable to denial of service attacks caused by a programming mistake in handling requests containing extra unrecognized arguments which results in an infinite loop. While this is no problem for the daemon itself as every request will spawn a new git-daemon instance, this still results in a very high CPU consumption and might lead to denial of service conditions.

For the oldstable distribution (etch), this problem has been fixed in version 1.4.4.4-4+etch3.

For the stable distribution (lenny), this problem has been fixed in version 1.5.6.5-3+lenny2.

For the testing distribution (squeeze), this problem has been fixed in version 1:1.6.3.3-1.

For the unstable distribution (sid), this problem has been fixed in version 1:1.6.3.3-1.

We recommend that you upgrade your git-core packages.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Source:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3.diff.gz
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4.orig.tar.gz
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3.dsc
Architecture-independent component:
http://security.debian.org/pool/updates/main/g/git-core/gitweb_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-svn_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-cvs_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-doc_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-email_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-daemon-run_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/gitk_1.4.4.4-4+etch3_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-arch_1.4.4.4-4+etch3_all.deb
Alpha:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_alpha.deb
AMD64:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_amd64.deb
ARM:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_arm.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_ia64.deb
Big-endian MIPS:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_mips.deb
PowerPC:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_powerpc.deb
IBM S/390:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.4.4.4-4+etch3_sparc.deb

Debian GNU/Linux 5.0 (lenny)

Source:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2.diff.gz
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5.orig.tar.gz
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2.dsc
Architecture-independent component:
http://security.debian.org/pool/updates/main/g/git-core/git-gui_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-arch_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/gitk_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-email_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-svn_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-daemon-run_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/gitweb_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-doc_1.5.6.5-3+lenny2_all.deb
http://security.debian.org/pool/updates/main/g/git-core/git-cvs_1.5.6.5-3+lenny2_all.deb
AMD64:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_amd64.deb
ARM:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_arm.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_ia64.deb
Big-endian MIPS:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_mips.deb
Little-endian MIPS:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_mipsel.deb
IBM S/390:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/g/git-core/git-core_1.5.6.5-3+lenny2_sparc.deb

MD5 checksums of the listed files are available in the original advisory.