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Home » Hacking News » CLA-2002:463: Local vulnerability in the uucp package

CLA-2002:463: Local vulnerability in the uucp package

by Nikola Strahija on February 19th, 2002 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.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/uucp-1.06.2-10U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/uucp-1.06.2-10U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/uucp-1.06.2-10U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/uucp-1.06.2-10U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/uucp-1.06.2-10U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/uucp-1.06.2-10U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-1.06.2-10U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-cu-1.06.2-10U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/uucp-doc-1.06.2-10U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/uucp-1.06.2-10U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/uucp-1.06.2-10U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/uucp-1.06.2-10U50_1cl.src.rpm
ftp://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


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


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