100287 2003-05-02 21:33 /142 rader/ <redhat-announce-list-admin@redhat.com>
Importerad: 2003-05-02 21:33 av Brevbäraren
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Ärende: [RHSA-2003:113-01] Updated mod_auth_any packages available
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Red Hat Security Advisory
Synopsis: Updated mod_auth_any packages available
Advisory ID: RHSA-2003:113-01
Issue date: 2003-05-02
Updated on: 2003-05-02
Product: Red Hat Linux
Keywords: mod_auth_any escape
Cross references:
Obsoletes:
CVE Names: CAN-2003-0084
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1. Topic:
Updated mod_auth_any packages are now available for Red Hat Linux.
2. Relevant releases/architectures:
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
3. Problem description:
mod_auth_any is a Web server module that allows the Apache httpd
server to call arbitrary external programs to verify user passwords.
Vulnerabilities have been found in the way mod_auth_any escapes shell
arguments when calling external programs. Versions of mod_auth_any
included in Red Hat Linux 7.2 and 7.3 are affected. These
vulnerabilities allow remote attackers to run arbitrary commands as
the user under which the Web server is running. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2003-0084 to these issues.
All users are advised to upgrade to these errata packages, which
address these vulnerabilities by changing the method by which
external programs are invoked.
Note: This updated module is more careful in checking the results of
the AuthAnyUserProg. Previous versions did not distinguish between
the program outputting nothing due to success or a crash. This
replacement version treats a zero-length result as if it were an
"Authentication Error," and expects the program to output a valid
username on success.
Red Hat would like to thank Daniel Jarboe and Maneesh Sahani for bringing
these issues to our attention.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only
those RPMs which are currently installed will be updated. Those RPMs
which are not installed but included in the list will not be updated.
Note that you can also use wildcards (*.rpm) if your current
directory *only* contains the desired RPMs.
Please note that this update is also available via Red Hat Network.
Many people find this an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
77414 - CAN-2003-0084 mod_auth_any popen without checking for ; or "
in input
6. RPMs required:
Red Hat Linux 7.2:
SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/mod_auth_any-1.2.2-2.src.rpm
i386:
ftp://updates.redhat.com/7.2/en/os/i386/mod_auth_any-1.2.2-2.i386.rpm
ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/mod_auth_any-1.2.2-2.ia64.rpm
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/mod_auth_any-1.2.2-2.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/mod_auth_any-1.2.2-2.i386.rpm
7. Verification:
MD5 sum Package Name
--------------------------------------------------------------------------
fdff9ef0f0ebceeed5fb74ef000439d9 7.2/en/os/SRPMS/mod_auth_any-1.2.2-2.src.rpm
2da126608c09ef9ce8f617d4cbefd00b 7.2/en/os/i386/mod_auth_any-1.2.2-2.i386.rpm
3e167cc091b577bb1fd6fe361f86ea48 7.2/en/os/ia64/mod_auth_any-1.2.2-2.ia64.rpm
fdff9ef0f0ebceeed5fb74ef000439d9 7.3/en/os/SRPMS/mod_auth_any-1.2.2-2.src.rpm
2da126608c09ef9ce8f617d4cbefd00b 7.3/en/os/i386/mod_auth_any-1.2.2-2.i386.rpm
These packages are GPG signed by Red Hat for security. Our key is
available at http://www.redhat.com/solutions/security/news/publickey/
You can verify each package with the following command:
rpm --checksig -v <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
md5sum <filename>
8. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0084
9. Contact:
The Red Hat security contact is <security@redhat.com>. More contact
details at http://www.redhat.com/solutions/security/news/contact/
Copyright 2003 Red Hat, Inc.
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