February 18, 2002

Conectiva: 'uucp' Local privilege escalation vulnerability

Author: JT Smith

Conectiva: "zen-parse found a vulnerability in the command-line argumenthandling of uucp which could be exploited by a local user to obtain uucp uid/gid."

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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE   : uucp
SUMMARY   : Local vulnerability in the uucp package
DATE      : 2002-02-18 13:30:00
ID        : CLA-2002:463
RELEVANT
RELEASES  : 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0

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DESCRIPTION
 UUCP is a Unix to Unix transfer mechanism. It is used primarily
 for remote sites to download and upload email and news files to local
 machines.

 zen-parse found[1] a vulnerability in the command-line argument
 handling of uucp which could be exploited by a local user to obtain
 uucp uid/gid.

 This vulnerability was supposed to be fixed in the CLSA-2001:425
 announcement[2], but zen-parse found[3] the used patch was not
 totally effective. Security precautions were not being enforced for
 all command line options variants, such as "--confi" for "--config"
 or "-c" which are synonymous due to the way getopt() works.

 The upstream uucp author, Ian Lance Taylor, provided a patch to solve
 this vulnerability.


SOLUTION
 All uucp users should upgrade.


 REFERENCES:
 1 .http://www.securityfocus.com/archive/1/212892
2 .http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000425&idioma=en
3 .http://www.securityfocus.com/archive/1/251168


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES 
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/uucp-1.06.2-10U50_1cl.src.rpmftp://atualizacoes.conectiva.com.br/5.0/i386/uucp-1.06.2-10U50_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/5.1/SRPMS/uucp-1.06.2-10U51_1cl.src.rpmftp://atualizacoes.conectiva.com.br/5.1/i386/uucp-1.06.2-10U51_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/6.0/SRPMS/uucp-1.06.2-10U60_1cl.src.rpmftp://atualizacoes.conectiva.com.br/6.0/RPMS/uucp-1.06.2-10U60_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/SRPMS/uucp-1.06.2-10U70_1cl.src.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-1.06.2-10U70_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-cu-1.06.2-10U70_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-doc-1.06.2-10U70_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/uucp-1.06.2-10U50_1cl.src.rpmftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/uucp-1.06.2-10U50_1cl.i386.rpmftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/uucp-1.06.2-10U50_1cl.src.rpmftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/uucp-1.06.2-10U50_1cl.i386.rpm


ADDITIONAL INSTRUCTIONS
 Users of Conectiva Linux version 6.0 or higher may use apt to perform
 upgrades of RPM packages:
 - add the following line to /etc/apt/sources.list if it is not there yet
   (you may also use linuxconf to do this):

 rpm [cncbr]  ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

 - 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


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

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