Debian Security Advisory

DSA-396-1 thttpd -- missing input sanitizing, wrong calculation

Date Reported:

29 Oct 2003

Affected Packages:

Vulnerable:

Yes

Security database references:

In the Bugtraq database (at SecurityFocus): BugTraq ID 8906, BugTraq ID 8924.
In Mitre's CVE dictionary: CVE-2002-1562, CVE-2003-0899.

More information:

Several vulnerabilities have been discovered in thttpd, a tiny HTTP server.

The Common Vulnerabilities and Exposures project identifies the following vulnerabilities:

CAN-2002-1562: Information leak
Marcus Breiing discovered that if thttpd it is used for virtual hosting, and an attacker supplies a specially crafted “Host:” header with a pathname instead of a hostname, thttpd will reveal information about the host system. Hence, an attacker can browse the entire disk.
CAN-2003-0899: Arbitrary code execution
Joel Söderberg and Christer Öberg discovered a remote overflow which allows an attacker to partially overwrite the EBP register and hence execute arbitrary code.

For the stable distribution (woody) these problems have been fixed in version 2.21b-11.2.

For the unstable distribution (sid) these problems have been fixed in version 2.23beta1-2.3.

We recommend that you upgrade your thttpd package immediately.

Fixed in:

Debian GNU/Linux 3.0 (woody)

Source:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2.dsc; http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2.diff.gz; http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_alpha.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_alpha.deb
ARM:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_arm.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_arm.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_i386.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_ia64.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_ia64.deb
HPPA:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_hppa.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_hppa.deb
Motorola 680x0:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_m68k.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_m68k.deb
Big endian MIPS:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_mips.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_mips.deb
Little endian MIPS:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_mipsel.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_powerpc.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_s390.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.21b-11.2_sparc.deb; http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.21b-11.2_sparc.deb

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