Debian Security Advisory

DSA-1884-1 nginx -- buffer underflow

Date Reported:

14 Sep 2009

Affected Packages:

nginx

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2009-2629.

More information:

Chris Ries discovered that nginx, a high-performance HTTP server, reverse proxy and IMAP/POP3 proxy server, is vulnerable to a buffer underflow when processing certain HTTP requests. An attacker can use this to execute arbitrary code with the rights of the worker process (www-data on Debian) or possibly perform denial of service attacks by repeatedly crashing worker processes via a specially crafted URL in an HTTP request.

For the oldstable distribution (etch), this problem has been fixed in version 0.4.13-2+etch2.

For the stable distribution (lenny), this problem has been fixed in version 0.6.32-3+lenny2.

For the testing distribution (squeeze), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in version 0.7.61-3.

We recommend that you upgrade your nginx packages.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Source:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13.orig.tar.gz; http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2.diff.gz; http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2.dsc
Alpha:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_arm.deb
HP Precision:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_mips.deb
Little-endian MIPS:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch2_sparc.deb

Debian GNU/Linux 5.0 (lenny)

Source:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2.dsc; http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2.diff.gz; http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_arm.deb
HP Precision:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_mips.deb
Little-endian MIPS:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_powerpc.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/n/nginx/nginx_0.6.32-3+lenny2_sparc.deb

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