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Home » Security Advisories» Debian » New exim-tls packages fix buffer overflows

New exim-tls packages fix buffer overflows

Georgi Guninski discovered two stack-based buffer overflows in exim and exim-tls. They can not be exploited with the default configuration from the Debian system, though.

  • Vendor: Debian
  • Vendor ID: DSA 502-1
  • Date: May 11, 2004


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Debian Security Advisory DSA 502-1 [email protected]
http://www.debian.org/security/ Martin Schulze
May 11th, 2004 http://www.debian.org/security/faq
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Package : exim-tls
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-0399 CAN-2004-0400

Georgi Guninski discovered two stack-based buffer overflows in exim
and exim-tls. 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 3.35-3woody2.

The unstable distribution (sid) does not contain exim-tls anymore.
The functionality has been incorporated in the main exim versions
which have these problems 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-tls package.


Upgrade Instructions
- --------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.0 alias woody
- --------------------------------

Source archives:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2.dsc
Size/MD5 checksum: 677 992f537ab952a5dc72ca5dbc81a84fbc
http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2.diff.gz
Size/MD5 checksum: 80179 3f0742c775c071b21c0b09527dad75ec
http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35.orig.tar.gz
Size/MD5 checksum: 1271057 42d362e40a21bd7ffc298f92c8bd986a

Alpha architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_alpha.deb
Size/MD5 checksum: 873574 7430b4927e9c2078c59eafe17bae5165

ARM architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_arm.deb
Size/MD5 checksum: 783982 06a82a303c171107d2f1688b482377bd

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_i386.deb
Size/MD5 checksum: 759420 ea3302d15ec0d601c5019d45c8c0b096

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_ia64.deb
Size/MD5 checksum: 973922 e3ac0d7664959623d55b597c8aa56572

HP Precision architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_hppa.deb
Size/MD5 checksum: 814182 1c943be21bc25358690ac086c2a45994

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_m68k.deb
Size/MD5 checksum: 736562 71dec71d4ec85be81886484d00bd1e3c

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_mips.deb
Size/MD5 checksum: 824300 c9fca04199e8fd78a4b96de92098957a

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_mipsel.deb
Size/MD5 checksum: 824960 6d51d7fbad04d5aa80503ee0ded41c4d

PowerPC architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_powerpc.deb
Size/MD5 checksum: 792588 5a51bcc85377381bfbcb03ebdfe22eb8

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_s390.deb
Size/MD5 checksum: 779108 e625ab3a0334821727ec96462e048532

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/e/exim-tls/exim-tls_3.35-3woody2_sparc.deb
Size/MD5 checksum: 782712 f2ec2bbe42fc7ee482d4707443cc83fc


These files will probably be moved into the stable distribution on
its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: [email protected]
Package info: `apt-cache show ' and http://packages.debian.org/

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