Debian Security Advisory

DSA-1149-1 ncompress -- buffer underflow

Date Reported:
10 Aug 2006
Affected Packages:
ncompress
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2006-1168.
More information:

Tavis Ormandy from the Google Security Team discovered a missing boundary check in ncompress, the original Lempel-Ziv compress and uncompress programs, which allows a specially crafted datastream to underflow a buffer with attacker controlled data.

For the stable distribution (sarge) this problem has been fixed in version 4.2.4-15sarge2.

For the unstable distribution (sid) this problem has been fixed in version 4.2.4-15sarge2.

We recommend that you upgrade your ncompress package.

Fixed in:

Debian GNU/Linux 3.1 (sarge)

Source:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2.dsc
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2.diff.gz
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4.orig.tar.gz
Alpha:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_alpha.deb
AMD64:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_amd64.deb
ARM:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_arm.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_ia64.deb
HPPA:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_hppa.deb
Motorola 680x0:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_m68k.deb
Big endian MIPS:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_mips.deb
Little endian MIPS:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_mipsel.deb
PowerPC:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_powerpc.deb
IBM S/390:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/n/ncompress/ncompress_4.2.4-15sarge2_sparc.deb

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