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Debian Security Advisory DSA 120-1                     security@debian.org

http://www.debian.org/security/                             Martin Schulze

March 10th, 2002  

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Package        : libapache-mod-ssl, apache-ssl

Vulnerability  : buffer overflow

Problem-Type   : remote

Debian-specific: no



Ed Moyle recently found a buffer overflow in Apache-SSL and mod_ssl.

With session caching enabled, mod_ssl will serialize SSL session

variables to store them for later use.  These variables were stored in

a buffer of a fixed size without proper boundary checks.



To exploit the overflow, the server must be configured to require client

certificates, and an attacker must obtain a carefully crafted client

certificate that has been signed by a Certificate Authority which is

trusted by the server. If these conditions are met, it would be possible

for an attacker to execute arbitrary code on the server.



This problem has been fixed in version 1.3.9.13-4 of Apache-SSL and

version 2.4.10-1.3.9-1potato1 of libapache-mod-ssl for the stable

Debian distribution as well as in version 1.3.23.1+1.47-1 of

Apache-SSL and version 2.8.7-1 of libapache-mod-ssl for the testing

and unstable distribution of Debian.



We recommend that you upgrade your Apache-SSL and mod_ssl packages.



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 2.2 alias potato

------------------------------------



  Source archives:



    apache-ssl_1.3.9.13-4.diff.gz
      MD5 checksum: 3da52b3f9126fe25005b5aca78842412

    apache-ssl_1.3.9.13-4.dsc
      MD5 checksum: 5486c0c68cabd056c64ad13193606e6c

    apache-ssl_1.3.9.13.orig.tar.gz
      MD5 checksum: e28b3b656449a5a2f9080286ae3d743e



    libapache-mod-ssl_2.4.10-1.3.9-1potato1.diff.gz
      MD5 checksum: 33535057f5f2f84005206c2917b8330e

    libapache-mod-ssl_2.4.10-1.3.9-1potato1.dsc
      MD5 checksum: 3a94a4a714cbb70e5aa270654f42be40

    libapache-mod-ssl_2.4.10-1.3.9.orig.tar.gz
      MD5 checksum: cb0f2e07065438396f0d5df403dd2c16



  Architecture independent components:



    libapache-mod-ssl-doc_2.4.10-1.3.9-1potato1_all.deb
      MD5 checksum: 504b8cad4b600ff0e0293998e62c0e00



  Alpha architecture:



    apache-ssl_1.3.9.13-4_alpha.deb
      MD5 checksum: 0c71a5c18bd0fff6f6c981ba50a9c7aa

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_alpha.deb
      MD5 checksum: 785dca8af6fbf7c26f91c50ccb013dff



  ARM architecture:



    apache-ssl_1.3.9.13-4_arm.deb
      MD5 checksum: a198919424658154ba70ca825ea1033f

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_arm.deb
      MD5 checksum: 31d195deef66b4e655a366ac677c81ec



  Intel ia32 architecture:



    apache-ssl_1.3.9.13-4_i386.deb
      MD5 checksum: 5085998b8751242a7e9c59b4806a7b24

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_i386.deb
      MD5 checksum: e9a64fab4b7891f00b7e66f524ec0ec9



  Motorola 680x0 architecture:



    apache-ssl_1.3.9.13-4_m68k.deb
      MD5 checksum: 55e91cb1aa3ff88c7c68440c8b1e4854

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_m68k.deb
      MD5 checksum: 27ba5cc1188b0eef0dc6a9f1d790c08a



  PowerPC architecture:



    apache-ssl_1.3.9.13-4_powerpc.deb
      MD5 checksum: 7832352ee0b9254d4ed2cf54ac5486fa

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_powerpc.deb
      MD5 checksum: ba638df06f1f0d671e4cb0b02bc2f53c



  Sun Sparc architecture:



    apache-ssl_1.3.9.13-4_sparc.deb
      MD5 checksum: 50277f2251d1c0df8dc610f30cc866fc

    libapache-mod-ssl_2.4.10-1.3.9-1potato1_sparc.deb
      MD5 checksum: 77c1a0034ba5b95f042dbe51a609d191





  These files will probably be moved into the stable distribution on

  its next revision.



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For apt-get: deb http://security.debian.org/ stable/updates main

For dpkg-ftp: ftp://security.debian.org/debian-securitydists/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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