(Debian Issues Fix) Emil Buffer Overflows and Format String Flaws Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1009574 |
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SecurityTracker URL: http://securitytracker.com/id/1009574
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CVE Reference:
CAN-2004-0152, CAN-2004-0153
(Links to External Site)
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Date: Mar 29 2004
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.1.0-beta9 and prior versions
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Description:
Some buffer overflow and format string vulnerabilities were reported in Emil. A remote user can execute arbitrary code on the target system.
Ulf Harnhammar reported that there are several buffer overflows in Emil [CVE: CAN-2004-0152]. The encode_mime(), encode_uuencode(), and decode_uuencode() functions are affected. A remote user can reportedly send a specially crafted e-mail message to cause the Emil filter to execute arbitrary code.
These overflow conditions can be triggered when converting files with long filenames from MIME to uuencode, when parsing uuencoded files with long filenames, and when converting SUN Mailtool files with long filenames to MIME format, the report said.
It is also reported that some of the code that prints error messages contains format string flaws [CVE: CAN-2004-0153]. The impact of these errors was not determined.
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Impact:
A remote user can cause arbitrary code to be executed on the target system with the privileges of the emil process.
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Solution:
Debian has released a fix for the stable distribution (woody) in version 2.1.0-beta9-11woody1. A fix for the unstable distribution (sid) will be available soon.
Debian GNU/Linux 3.0 alias woody:
Source archives:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1.dsc
Size/MD5 checksum: 602 1b5b16236b90e3b5c5dd1362e2a774db
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1.diff.gz
Size/MD5 checksum: 12492 dcfdd2e61e53595b5e7547725deb90ab
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9.orig.tar.gz
Size/MD5 checksum: 214318 c9f6db6e90b5a6feb2d95cf71302aac8
Alpha architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_alpha.deb
Size/MD5 checksum: 139162 bef107a1a689d376da590dd63c85855d
ARM architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_arm.deb
Size/MD5 checksum: 123982 a9be874dc7313689fd3c4983a88274f5
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_i386.deb
Size/MD5 checksum: 120678 979224cbb3c7eedb244ff0c32c2fcf5a
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_ia64.deb
Size/MD5 checksum: 159672 727994fa7ca7c1f29bda179aa6c4caf1
HP Precision architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_hppa.deb
Size/MD5 checksum: 130684 d8ee92a6c252cf697d855272461601df
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_m68k.deb
Size/MD5 checksum: 117510 946d04b64b429f4effdc8b4fa0333959
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_mips.deb
Size/MD5 checksum: 130778 56c11718bfbab733906e1625a9cb1612
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_mipsel.deb
Size/MD5 checksum: 130640 e295c6fbc486e1434e550481e6a4c312
PowerPC architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_powerpc.deb
Size/MD5 checksum: 127604 edd93d91f860b68ed5fb54feca725af2
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_s390.deb
Size/MD5 checksum: 122696 5e3cdae4d6e3a586ec76d5e72db2e747
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_sparc.deb
Size/MD5 checksum: 127246 d76935af3c31b1b7d8f3915d51c825c6
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Vendor URL: www.debian.org/security/ (Links to External Site)
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Cause:
Boundary error, Input validation error, State error
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Underlying OS:
Linux (Debian)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Wed, 24 Mar 2004 11:24:33 -0800
Subject: [SECURITY] [DSA 468-1] New emil packages fix multiple vulnerabilities
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
Debian Security Advisory DSA 468-1 security@debian.org
http://www.debian.org/security/ Matt Zimmerman
March 24th, 2004 http://www.debian.org/security/faq
- --------------------------------------------------------------------------
Package : emil
Vulnerability : several
Problem-Type : local/remote
Debian-specific: no
CVE Ids : CAN-2004-0152 CAN-2004-0153
Ulf Harnhammar discovered a number of vulnerabilities in emil, a
filter for converting Internet mail messages. The vulnerabilities
fall into two categories:
- CAN-2004-0152 - Buffer overflows in (1) the encode_mime function,
(2) the encode_uuencode function, (3) the decode_uuencode
function. These bugs could allow a carefully crafted email message
to cause the execution of arbitrary code supplied with the message
when it is acted upon by emil.
- CAN-2004-0153 - Format string bugs in statements which print
various error messages. The exploit potential of these bugs has
not been established, and is probably configuration-dependent.
For the stable distribution (woody) these problems have been fixed in
version 2.1.0-beta9-11woody1.
For the unstable distribution (sid) these problems will be fixed soon.
We recommend that you update your emil 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/emil/emil_2.1.0-beta9-11woody1.dsc
Size/MD5 checksum: 602 1b5b16236b90e3b5c5dd1362e2a774db
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1.diff.gz
Size/MD5 checksum: 12492 dcfdd2e61e53595b5e7547725deb90ab
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9.orig.tar.gz
Size/MD5 checksum: 214318 c9f6db6e90b5a6feb2d95cf71302aac8
Alpha architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_alpha.deb
Size/MD5 checksum: 139162 bef107a1a689d376da590dd63c85855d
ARM architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_arm.deb
Size/MD5 checksum: 123982 a9be874dc7313689fd3c4983a88274f5
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_i386.deb
Size/MD5 checksum: 120678 979224cbb3c7eedb244ff0c32c2fcf5a
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_ia64.deb
Size/MD5 checksum: 159672 727994fa7ca7c1f29bda179aa6c4caf1
HP Precision architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_hppa.deb
Size/MD5 checksum: 130684 d8ee92a6c252cf697d855272461601df
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_m68k.deb
Size/MD5 checksum: 117510 946d04b64b429f4effdc8b4fa0333959
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_mips.deb
Size/MD5 checksum: 130778 56c11718bfbab733906e1625a9cb1612
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_mipsel.deb
Size/MD5 checksum: 130640 e295c6fbc486e1434e550481e6a4c312
PowerPC architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_powerpc.deb
Size/MD5 checksum: 127604 edd93d91f860b68ed5fb54feca725af2
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_s390.deb
Size/MD5 checksum: 122696 5e3cdae4d6e3a586ec76d5e72db2e747
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/e/emil/emil_2.1.0-beta9-11woody1_sparc.deb
Size/MD5 checksum: 127246 d76935af3c31b1b7d8f3915d51c825c6
These files will probably be moved into the stable distribution on
its next revision.
- ---------------------------------------------------------------------------------
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: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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