DSA-1202-1 screen -- programming error

Debian Security Advisory

DSA-1202-1 screen -- programming error

Date Reported:

31 Oct 2006

Affected Packages:

screen

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 395225, Bug 395999.
In Mitre's CVE dictionary: CVE-2006-4573.

More information:

cstone and Rich Felker discovered that specially crafted UTF-8 sequences may lead an out of bands memory write when displayed inside the screen terminal multiplexer, allowing denial of service and potentially the execution of arbitrary code.

For the stable distribution (sarge) this problem has been fixed in version 4.0.2-4.1sarge1. Due to technical problems with the security buildd infrastructure this update lacks a build for the Sun Sparc architecture. It will be released as soon as the problems are resolved.

For the unstable distribution (sid) this problem has been fixed in version 4.0.3-0.1.

We recommend that you upgrade your screen package.

Fixed in:

Debian GNU/Linux 3.1 (sarge)

Source:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.dsc

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1.diff.gz

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2.orig.tar.gz

Alpha:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_alpha.deb

AMD64:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_amd64.deb

ARM:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_arm.deb

HPPA:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_ia64.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_m68k.deb

Big endian MIPS:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mips.deb

Little endian MIPS:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/s/screen/screen_4.0.2-4.1sarge1_s390.deb

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