Debian Security Advisory

DSA-501-1 exim -- buffer overflow

Date Reported:

07 May 2004

Affected Packages:

Vulnerable:

Yes

Security database references:

In the Bugtraq database (at SecurityFocus): BugTraq ID 10290, BugTraq ID 10291.
In Mitre's CVE dictionary: CVE-2004-0399, CVE-2004-0400.

More information:

Georgi Guninski discovered two stack-based buffer overflows. They can not be exploited with the default configuration from the Debian system, though. The Common Vulnerabilities and Exposures project identifies the following problems that are fixed with this update:

CAN-2004-0399
When "sender_verify = true" is configured in exim.conf a buffer overflow can happen during verification of the sender. This problem is fixed in exim 4.
CAN-2004-0400
When headers_check_syntax is configured in exim.conf a buffer overflow can happen during the header check. This problem does also exist in exim 4.

For the stable distribution (woody) these problems have been fixed in version 3.35-1woody3.

For the unstable distribution (sid) these problems have been fixed in version 3.36-11 for exim 3 and in version 4.33-1 for exim 4.

We recommend that you upgrade your exim package.

Fixed in:

Debian GNU/Linux 3.0 (woody)

Source:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3.dsc; http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3.diff.gz; http://security.debian.org/pool/updates/main/e/exim/exim_3.35.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_alpha.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_alpha.deb
ARM:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_arm.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_arm.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_i386.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_ia64.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_ia64.deb
HPPA:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_hppa.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_hppa.deb
Motorola 680x0:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_m68k.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_m68k.deb
Big endian MIPS:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_mips.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_mips.deb
Little endian MIPS:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_mipsel.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_powerpc.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_s390.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/e/exim/exim_3.35-1woody3_sparc.deb; http://security.debian.org/pool/updates/main/e/exim/eximon_3.35-1woody3_sparc.deb

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