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Conectiva Linux Advisory: lha

May 10, 2004, 19:14 (0 Talkback[s])

CONECTIVA LINUX SECURITY ANNOUNCEMENT

PACKAGE : lha
SUMMARY : Buffer overflow and directory traversal vulnerabilities
DATE : 2004-05-06 18:20:00
ID : CLA-2004:840
RELEVANT RELEASES : 8, 9


DESCRIPTION
Lha is an archiving and compression utility for LHarc format archives.

Ulf Harnhammar discovered a buffer overflow[1] and a directory traversal [2]vulnerability in the lha utility. Both vulnerabilities can be exploited by an attacker with the use of specially crafted LHarc archives. When processed by lha, these files may cause it to execute arbitrary code (exploiting the buffer overflow vulnerability) or overwrite arbitrary files if the user unpacking the malicious archive has sufficient filesystem permissions to do so (exploiting the directory traversal vulnerability).

This update fixes both issues.

SOLUTION
All users of the lha utility should upgrade.

REFERENCES:
1.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0234
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0235

UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/8/RPMS/lha-1.14i-2U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/lha-1.14i-2U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/lha-1.14i-8382U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/lha-1.14i-8382U90_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 regarding 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) 2004 Conectiva Inc.
http://www.conectiva.com