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Slackware: apache Multiple vulnerabilities Print E-mail
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Posted by Team   
Slackware Patch corrects denial of service and shell escape vulnerabilities.

[slackware-security]  apache (SSA:2004-133-01)

New apache packages are available for Slackware 8.1, 9.0, 9.1, and -current to
fix security issues.  These include a possible denial-of-service attack as well
as the ability to possible pipe shell escapes through Apache's errorlog (which
could create an exploit if the error log is read in a terminal program that
does not filter such escapes).  We recommend that sites running Apache upgrade
to the new Apache package.

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

Here are the details from the Slackware 9.1 ChangeLog:
Wed May 12 13:06:39 PDT 2004
patches/packages/apache-1.3.29-i486-2.tgz:  Patched four security issues
  in the Apache web server as noted on
  These security fixes were backported from Apache 1.3.31:

    In mod_digest, verify whether the nonce returned in the client
    response is one we issued ourselves.  This problem does not affect
    mod_auth_digest. (CAN-2003-0987)

    Escape arbitrary data before writing into the errorlog.  (CAN-2003-0020)

    Fix starvation issue on listening sockets where a short-lived connection
    on a rarely-accessed listening socket will cause a child to hold the
    accept mutex and block out new connections until another connection
    arrives on that rarely-accessed listening socket.  (CAN-2004-0174)

    Fix parsing of Allow/Deny rules using IP addresses without a netmask;
    issue is only known to affect big-endian 64-bit platforms (CAN-2003-0993)

  For more details, see:

  (* Security fix *)

Where to find the new packages:

Updated package for Slackware 8.1:

Updated package for Slackware 9.0:

Updated package for Slackware 9.1:

Updated packages for Slackware -current:
(these related packages are also available)

MD5 signatures:

Slackware 8.1 package:
53949a74ba3dd0a01271e3aa1178e082  apache-1.3.29-i386-2.tgz

Slackware 9.0 package:
64ede1f5637736842502301eb5bd727d  apache-1.3.29-i386-2.tgz

Slackware 9.1 package:
ec5dad948d8b17b82b91d756a5c6b0f9  apache-1.3.29-i486-2.tgz

Slackware -current packages:
a925f8be7b8bbcb7e4a77e2ef755988a  apache-1.3.31-i486-1.tgz
684626575e1c2a783b3d8d208876aab4  mod_ssl-2.8.17_1.3.31-i486-2.tgz
ad27d5f96281e11567184411b7c0720e  php-4.3.6-i486-2.tgz

Installation instructions:

First, stop apache:

# apachectl stop

Next, upgrade the Apache package as root:
(if you're running -current, upgrade mod_ssl and php as well)

# upgradepkg apache-1.3.29-i486-2.tgz

Finally, restart apache:

# apachectl start

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

# apachectl startssl


Slackware Linux Security Team

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