Date: Mon, 27 Jan 2003 11:42:21 -0500 (EST)
From: EnGarde Secure Linux <[email protected]>
To: [email protected], [email protected]Subject: [ESA-20030127-002] fetchmail-ssl: heap overflow vulnerability
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| EnGarde Secure Linux Security Advisory January 27, 2003 |
| http://www.engardelinux.org/ ESA-20030127-002 |
| |
| Package: fetchmail-ssl |
| Summary: heap overflow vulnerability. |
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EnGarde Secure Linux is a secure distribution of Linux that features
improved access control, host and network intrusion detection, Web
based secure remote management, e-commerce, and integrated open source
security tools.
OVERVIEW
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Stefan Esser of e-matters, while re-auditing the Fetchmail package,
found another vulnerability. This heap overflow vulnerability allows
a malicious remote attacker to crash Fetchmail or potentially execute
arbitrary code as the user under which Fetchmail is being run.
Please refer to the e-matters advisory for more information on this
vulnerability:
http://security.e-matters.de/advisories/052002.html
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-1365 to this issue.
All users are recommended to upgrade as soon as possible.
SOLUTION
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Users of the EnGarde Professional edition can use the Guardian Digital
Secure Network to update their systems automatically.
EnGarde Community users should upgrade to the most recent version
as outlined in this advisory. Updates may be obtained from:
ftp://ftp.engardelinux.org/pub/engarde/stable/updates/http://ftp.engardelinux.org/pub/engarde/stable/updates/
Before upgrading the package, the machine must either:
a) be booted into a "standard" kernel; or
b) have LIDS disabled.
To disable LIDS, execute the command:
# /sbin/lidsadm -S -- -LIDS_GLOBAL
To install the updated package, execute the command:
# rpm -Uvh files
You must now update the LIDS configuration by executing the command:
# /usr/sbin/config_lids.pl
To re-enable LIDS (if it was disabled), execute the command:
# /sbin/lidsadm -S -- +LIDS_GLOBAL
To verify the signatures of the updated packages, execute the command:
# rpm -Kv files
UPDATED PACKAGES
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These updated packages are for EnGarde Secure Linux Community
Edition.
Source Packages:
SRPMS/fetchmail-ssl-6.1.0-1.0.6.src.rpm
MD5 Sum: ae0150c61c667cd836cca1c64f76d807
Binary Packages:
i386/fetchmail-ssl-6.1.0-1.0.6.i386.rpm
MD5 Sum: a28aa248c0b262ec8745a7c776b8584b
i686/fetchmail-ssl-6.1.0-1.0.6.i686.rpm
MD5 Sum: 7dd04068ec8a400c72d711e4c2c2faee
REFERENCES
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Guardian Digital's public key:
http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY
Fetchmail's Official Web Site:
http://www.tuxedo.org/~esr/fetchmail/
Security Contact: [email protected]
EnGarde Advisories: http://www.engardelinux.org/advisories.html
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$Id: ESA-20030127-002-fetchmail-ssl,v 1.2 2003/01/27 16:39:35 rwm Exp $
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Author: Ryan W. Maple <[email protected]>
Copyright 2003, Guardian Digital, Inc.
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