mod_ssl

2004-06-02T12:24:39
ID SSA-2004-154-01
Type slackware
Reporter Slackware Linux Project
Modified 2004-06-02T12:24:39

Description

New mod_ssl packages are available for Slackware 8.1, 9.0, 9.1, and -current to fix a security issue. The packages were upgraded to mod_ssl-2.8.18-1.3.31 fixing a buffer overflow that may allow remote attackers to execute arbitrary code via a client certificate with a long subject DN, if mod_ssl is configured to trust the issuing CA. Web sites running mod_ssl should upgrade to the new set of apache and mod_ssl packages. There are new PHP packages as well to fix a Slackware-specific local denial-of-service issue (an additional Slackware advisory SSA:2004-154-02 has been issued for PHP).

More details about the mod_ssl issue may be found in the Common Vulnerabilities and Exposures (CVE) database:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0488

Here are the details from the Slackware 9.1 ChangeLog:

Wed Jun 2 11:28:17 PDT 2004 patches/packages/mod_ssl-2.8.18_1.3.31-i486-1.tgz: Upgraded to mod_ssl-2.8.18-1.3.31. This fixes a buffer overflow that may allow remote attackers to execute arbitrary code via a client certificate with a long subject DN, if mod_ssl is configured to trust the issuing CA: ) Fix buffer overflow in "SSLOptions +FakeBasicAuth" implementation if the Subject-DN in the client certificate exceeds 6KB in length. For more details, see: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0488 ( Security fix *) Other changes: Make the sample keys .new so as not to overwrite existing server keys. However, any existing mod_ssl package will have these listed as non-config files, and will still remove and replace these upon upgrade. You'll have to save your config files one more time... sorry).

Where to find the new packages:

Updated packages for Slackware 8.1: ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/apache-1.3.31-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/mod_ssl-2.8.18_1.3.31-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/php-4.3.6-i386-1.tgz

Updated packages for Slackware 9.0: ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/apache-1.3.31-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/mod_ssl-2.8.18_1.3.31-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/php-4.3.6-i386-1.tgz

Updated packages for Slackware 9.1: ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/apache-1.3.31-i486-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/mod_ssl-2.8.18_1.3.31-i486-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/php-4.3.6-i486-1.tgz

Updated packages for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/apache-1.3.31-i486-2.tgz ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/mod_ssl-2.8.18_1.3.31-i486-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/php-4.3.6-i486-4.tgz

MD5 signatures:

Slackware 8.1 packages: 5746a612882fb1ba946305e34fc8dd45 apache-1.3.31-i386-1.tgz d4930240294413471df9128dcd1e71ee mod_ssl-2.8.18_1.3.31-i386-1.tgz cee32e839211a37b0081615b4112b87f php-4.3.6-i386-1.tgz

Slackware 9.0 packages: 6366a8951a42536c99d9f926bd7ed4c9 apache-1.3.31-i386-1.tgz dff6235ef0f46b4ab77aefa989e1b3f7 mod_ssl-2.8.18_1.3.31-i386-1.tgz eaa0c69981f0aa8cc6b2d4ef0269481c php-4.3.6-i386-1.tgz

Slackware 9.1 packages: 5fbeac17051bcf7e41446d7b7a7a82be apache-1.3.31-i486-1.tgz 6a96640c9beb79dde305ddb22e36509e mod_ssl-2.8.18_1.3.31-i486-1.tgz 007c48e42d292819b6cdc66e2e8334e0 php-4.3.6-i486-1.tgz

Slackware -current packages: 5d69e97123241842eafc701c8bd6af88 apache-1.3.31-i486-2.tgz 020e5253fdd9f48ed163ad331e7b05fc mod_ssl-2.8.18_1.3.31-i486-1.tgz 07bcba5e37538f16941141c43006cec1 php-4.3.6-i486-4.tgz

Installation instructions:

First, stop apache:

> apachectl stop

IMPORTANT: Backup any keys/certificates you wish to save for mod_ssl (in /etc/apache/ssl.*)

Next, upgrade these packages as root:

> upgradepkg apache-1.3.31-i486-1.tgz > upgradepkg mod_ssl-2.8.18_1.3.31-i486-1.tgz > upgradepkg php-4.3.6-i486-1.tgz

If necessary, restore any mod_ssl config files.

Finally, restart apache:

> apachectl start

Or, if you're running a secure server with mod_ssl:

> apachectl startssl