Conectiva Linux Advisory: openssl

CONECTIVA LINUX SECURITY ANNOUNCEMENT

DESCRIPTION
OpenSSL[1] implements the Secure Sockets Layer (SSL v2/v3) and
Transport Layer Security (TLS v1) protocols as well as
full-strength general purpose cryptography functions. It is used
(as a library) by several projects, like Apache, OpenSSH, Bind,
OpenLDAP and many others clients and servers programs.

NISCC[2] developed a test suit to verify the behavior of SSL and
TLS implementations when presented with malformed client
certificates. As a result of this test, the following
vulnerabilities[3,4] were found in the OpenSSL implementation:

• Vulnerabilities in the handling of malformed ASN.1 tags
  (CAN-2003-0543[5] and CAN-2003-0544[6]). Because of a flaw in the
  handling of ASN.1 tag values, an out-of-bounds read can be
  triggered in some situations. A remote attacker can exploit these
  vulnerabilities to cause a denial of service condition.
• Stack corruption in the handling of rejected ASN.1 encodings
  (CAN-2003-0545[7]). A remote attacker may exploit this
  vulnerability to cause a denial of service condition and
  potentially execute arbitrary code. This vulnerability does not
  affect the OpenSSL versions distributed with Conectiva Linux 7.0
  and 8 (OpenSSL-0.9.6).

Additionally, this update includes fixes for a bug which causes
OpenSSL to parse a client certificate when it should reject it as a
protocol error.

SOLUTION
It is recommended that all users upgrade their openssl
packages.

Please note that it is necessary to restart services which use
the library (such as the apache web server with SSL enabled) so
that the new, fixed, version is used. A list of such applications
can be obtained after the upgrade with the following command:

lsof | grep libssl

The first column will contain the name of the application that
needs to be restarted. If there is any doubt about which
application has to be restarted or how to do it, we recommend that
the system be rebooted.

REFERENCES
1.http://www.openssl.org
2.http://www.niscc.gov.uk/aboutniscc/index.htm

3.http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm

4.http://www.openssl.org/news/secadv_20030930.txt

5.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543

6.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544

7.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545

UPDATED PACKAGES

ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssl-0.9.6a-3U70_7cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssl-devel-0.9.6a-3U70_7cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssl-devel-static-0.9.6a-3U70_7cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssl-progs-0.9.6a-3U70_7cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/openssl-0.9.6a-3U70_7cl.src.rpm

ftp://atualizacoes.conectiva.com.br/8/RPMS/openssl-0.9.6c-2U80_6cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/8/RPMS/openssl-devel-0.9.6c-2U80_6cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/8/RPMS/openssl-devel-static-0.9.6c-2U80_6cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/8/RPMS/openssl-progs-0.9.6c-2U80_6cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/8/SRPMS/openssl-0.9.6c-2U80_6cl.src.rpm

ftp://atualizacoes.conectiva.com.br/9/RPMS/openssl0.9.7-0.9.7a-28910U90_1cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/9/RPMS/openssl-devel-0.9.7a-28910U90_1cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/9/RPMS/openssl-devel-static-0.9.7a-28910U90_1cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/9/RPMS/openssl-progs-0.9.7a-28910U90_1cl.i386.rpm

ftp://atualizacoes.conectiva.com.br/9/SRPMS/openssl0.9.7-0.9.7a-28910U90_1cl.src.rpm

ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:

• run: apt-get update
• after that, execute: apt-get upgrade

Detailed instructions reagarding the use of apt and upgrade
examples can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en

All packages are signed with Conectiva’s GPG key. The key and
instructions on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can
be found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en

All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

Copyright (c) 2003 Conectiva Inc.
http://www.conectiva.com