[CLA-2002:539] Conectiva Linux Security Announcement - ypserv
Date: Wed, 30 Oct 2002 12:07:09 -0200
From: [email protected]
To: [email protected], [email protected],
Subject: [CLA-2002:539] Conectiva Linux Security Announcement - ypserv
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : ypserv
SUMMARY : Ypserv memory leak
DATE : 2002-10-30 12:06:00
ID : CLA-2002:539
RELEVANT
RELEASES : 6.0, 7.0, 8
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DESCRIPTION
"ypserv"[1] is an implementation of the Network Information System
(NIS) which is used to centralize user information as well as
authentication.
Thorsten Kukuk identified and fixed a memory leak vulnerability[2] in
the ypserv daemon. Requests for non-existing maps would cause the
ypserv daemon to consume more and more memory. An attacker in the
local network could flood the service with such requests until the
memory is exhausted, characterizing a DoS condition.
SOLUTION
All ypserv packages should upgrade their packages.
IMPORTANT: the ypserv service must be manually restarted after the
upgrade if it was already running, otherwise the vulnerability will
not be closed. To do so, run as root:
service ypserv restart
REFERENCES
1. http://www.linux-nis.org/nis/ypserv/index.html
2. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1232
3. http://www.linux-nis.org/nis/ypserv/NEWS
DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/ypserv-1.3.11-4U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/ypserv-1.3.11-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/ypserv-1.3.12-4U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/ypserv-1.3.12-4U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/ypserv-1.3.12-4U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/ypserv-1.3.12-4U80_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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