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Conectiva Linux Security Announcement - imap

Mar 20, 2001, 21:43 (0 Talkback[s])

Date: Mon, 19 Mar 2001 17:17:54 -0300
From: secure@CONECTIVA.COM.BR
To: BUGTRAQ@SECURITYFOCUS.COM
Subject: [CLA-2001:388] Conectiva Linux Security Announcement - imap


CONECTIVA LINUX SECURITY ANNOUNCEMENT

PACKAGE   : imap
SUMMARY   : Remote buffer overflow
DATE      : 2001-03-19 16:51:00
ID        : CLA-2001:388
RELEVANT
RELEASES  : 4.0, 4.0es, 4.1, 4.2, 5.0, prg graficos, ecommerce, 5.1, 6.0

DESCRIPTION
"imap" is a package which contains POP3 and IMAP mail servers. Several buffer overflow vulnerabilities have been found in this package by their authors and by independent groups (www.bufferoverflow.org has published an exploit for one of these vulnerabilities).

These vulnerabilities can be exploited only after user authentication, which basically limits the scope of the vulnerability to a remote shell with that user's permissions. On systems where users already have a shell, this vulnerability will not provide anything new to that user (unless he/she has only local shell access). But, on systems where the email accounts do not provide shell access (tipically ISPs), this is a bigger problem.

It is also important to note that packages from version 5.1 or higher of the CL distribution have been compiled with StackGuard, which makes it more difficult (but not impossible) to exploit buffer overflows of this type.

SOLUTION
The packages offered here include many security fixes from the latest beta version of imap at that time (snapshot 0102232125), and also fix the specific problem the published exploit attacks. It is recommended that all imap users update their packages, specially if their systems provide mail access without remote shell accounts.

DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/4.0/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/4.0/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0es/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/4.0es/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0es/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0es/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.0es/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.1/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/4.1/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.1/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.1/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.1/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.2/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/4.2/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.2/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.2/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/4.2/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/imap-doc-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/imap-2000c-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/imap-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/imap-devel-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/imap-devel-static-2000c-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/imap-doc-2000c-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