-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 +------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory January 25, 2002 | | http://www.engardelinux.org/ ESA-20020125-004 | | | | Package: rsync | | Summary: signed integer handling vulnerability | +------------------------------------------------------------------------+ EnGarde Secure Linux is a secure distribution of Linux that features improved access control, host and network intrusion detection, Web based secure remote management, complete e-commerce using AllCommerce, and integrated open source security tools. OVERVIEW - -------- There is a signed integer handling vulnerability in rsync which can allow an attacker to potentially gain root access. DETAIL - ------ There are instances where rsync does not do proper input validation, allowing an attacker to write NULL-bytes to somewhat arbitrary locations of the stack. This may potentially lead to a remote root shell. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0048 to this issue. SOLUTION - -------- This information applies only to EnGarde Secure Linux Community edition users. Registered users of the EnGarde Secure Linux Professional edition can use the Guardian Digital Secure Network to upgrade their packages automatically. All users should upgrade to the most recent version as outlined in this advisory. All updates may be found at: ftp://ftp.engardelinux.org/pub/engarde/stable/updates/ http://ftp.engardelinux.org/pub/engarde/stable/updates/ Before upgrading the package, the machine must either: a) be booted into a "standard" kernel; or b) have LIDS disabled. To disable LIDS, execute the command: # /sbin/lidsadm -S -- -LIDS_GLOBAL To install the updated package, execute the command: # rpm -Uvh <filename> You must now update the LIDS configuration by executing the command: # /usr/sbin/config_lids.pl To re-enable LIDS (if it was disabled), execute the command: # /sbin/lidsadm -S -- +LIDS_GLOBAL To verify the signatures of the updated packages, execute the command: # rpm -Kv <filename> UPDATED PACKAGES - ---------------- These updated packages are for EnGarde Secure Linux 1.0.1 (Finestra). Source Packages: SRPMS/rsync-2.4.6-1.0.3.src.rpm MD5 Sum: 0d327ed5799c5407df49aa63e1611592 Binary Packages: i386/rsync-2.4.6-1.0.3.i386.rpm MD5 Sum: 130608e7f4d1600d8ceb47ad7fe7c4ce i686/rsync-2.4.6-1.0.3.i686.rpm MD5 Sum: 17dea017e1991234eed30aea4248c479 REFERENCES - ---------- Guardian Digital's public key: http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY CVE Name CAN-2002-0048 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0048 Credit for the discovery of this bug goes to: Sebastian Krahmer <krahmerat_private> rsync's Official Web Site: http://rsync.samba.org Security Contact: securityat_private EnGarde Advisories: http://www.engardelinux.org/advisories.html - -------------------------------------------------------------------------- $Id: ESA-20020125-004-rsync,v 1.1 2002/01/25 16:04:36 rwm Exp $ - -------------------------------------------------------------------------- Author: Ryan W. Maple, <ryanat_private> Copyright 2002, Guardian Digital, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE8UYWhHD5cqd57fu0RAlIXAJ4/qEaAW++1UGmCNjFqL2zbvfWkdwCeOpHD 4Gh9HFYHppQBEBTcCjQA674= =RD5j -----END PGP SIGNATURE-----
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