ypserv previously existing map request memory leak
| ypserv-map-memory-leak (10423) |  Medium Risk |
Description:
ypserv could allow a remote attacker to obtain sensitive information, caused by a memory leak. A remote attacker could request a map that no longer exists to cause the server to leak partial information for the previously existing map, such as the domain name and map name.
Platforms Affected:
- Conectiva, Linux 6.0
- Conectiva, Linux 7.0
- Conectiva, Linux 8.0
- Debian, Debian Linux 2.2
- Debian, Debian Linux 3.0
- Gentoo, Linux
- Linux-NIS, ypserv 1.3.11
- Linux-NIS, ypserv 1.3.12
- Linux-NIS, ypserv 2.2
- Linux-NIS, ypserv 2.5
- MandrakeSoft, Mandrake Linux 7.2
- MandrakeSoft, Mandrake Linux 8.0
- MandrakeSoft, Mandrake Linux 8.0 PPC
- MandrakeSoft, Mandrake Linux 8.1
- MandrakeSoft, Mandrake Linux 8.1 IA64
- MandrakeSoft, Mandrake Linux 8.2
- MandrakeSoft, Mandrake Linux 8.2 PPC
- MandrakeSoft, Mandrake Linux 9.0
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Linux 6.2
- RedHat, Linux 7
- RedHat, Linux 7.1
- RedHat, Linux 7.1 for iSeries
- RedHat, Linux 7.1 for pSeries
- RedHat, Linux 7.2
- RedHat, Linux 7.3
- RedHat, Linux Advanced Workstation 2.1 Itanium
- SCO, Caldera OpenLinux Server 3.1
- SCO, Caldera OpenLinux Server 3.1.1
- SCO, Caldera OpenLinux Workstation 3.1
- SCO, Caldera OpenLinux Workstation 3.1.1
Remedy:
Upgrade to the latest version of ypserv (2.5 or later), available from the Linux NIS/NIS+ Projects Web site. See References.
For Debian GNU/Linux:
Upgrade to the latest nis package, as listed below. Refer to DSA-180-1 for more information. See References.
Debian GNU/Linux 2.2 (potato): 3.8-2.1 or later
Debian GNU/Linux 3.0 (woody): 3.9-6.1 or later
For Red Hat Linux:
Upgrade to the latest ypserv package, as listed below. Refer to RHSA-2002:223-07 for more information. See References.
Red Hat Linux 6.2: 1.3.9-3.6x or later
Red Hat 7.0, 7.1, 7.2 and 7.3: 2.5-2.7x or later
For Gentoo Linux:
Upgrade to the latest net-nds/ypserv package. Refer to Gentoo Linux Security Announcement 200210-010 for upgrade instructions. See References.
For Conectiva Linux:
Upgrade to the latest ypserv package, as listed below. Refer to Conectiva Linux Announcement CLSA-2002:539 for more information. See References.
Conectiva Linux 6.0: 1.3.11-4U60_1cl or later
Conectiva Linux 7.0: 1.3.12-4U70_1cl or later
Conectiva Linux 8.0: 1.3.12-4U80_1cl or later
For Mandrake Linux:
Upgrade to the latest ypservl package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2002:078 : ypserv for more information. See References.
Linux-Mandrake 7.2: 1.3.12-3.2mdk or later
Mandrake Linux 8.0 and 8.1: 1.3.12-3.2mdk or later
Mandrake Linux 8.2 and 9.0: 2.5-1.1mdk or later
For Caldera OpenLinux 3.1 and 3.1.1 (Workstation and Server):
Upgrade to the latest ypserv package (2.0-23 or later), as listed in SCO Security Advisory CSSA-2002-054.0. See References.
For HP-UX:
Apply the appropriate patch for your system, as listed in Hewlett-Packard Company Security Bulletin HPSBTL0210-074. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Obtain Information
References:
- Conectiva Linux Announcement CLSA-2002:539, Ypserv memory leak at http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000539.
- Freshmeat Newsletter Sat Aug 10 2002 - 23:10:08 CDT , [fm-news] Newsletter for Saturday, August 10th 2002 at http://archives.neohapsis.com/archives/apps/freshmeat/2002-08/0004.html.
- Gentoo Linux Security Announcement 200210-010, ypserv at http://www.linuxsecurity.com/content/view/104268/109/. (From LinuxSecurity archive)
- Linux NIS/NIS+ Projects Web site, www.linux-nis.org at http://www.linux-nis.org/index.html.
- Linux NIS/NIS+ Projects Web site, ypserv NEWS -- history of user-visible changes. at http://www.linux-nis.org/nis/ypserv/NEWS.
- SCO Security Advisory CSSA-2002-054.0, Linux: exploitable memory leak in ypserv at ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2002-054.0.txt.
- BID-6016: YPServ Remote Network Information Leakage Vulnerability
- CVE-2002-1232: Memory leak in ypdb_open in yp_db.c for ypserv before 2.5 in the NIS package 3.9 and earlier allows remote attackers to cause a denial of service (memory consumption) via a large number of requests for a map that does not exist.
- DSA-180: nis -- information leak
- MDKSA-2002:078: Updated ypserv packages fix memory leak
- RHSA-2002-223: Updated ypserv packages fixes memory leak
- RHSA-2002-224: ypserv security update
- RHSA-2003-229: Updated ypserv packages fix various vulnerabilities
Reported:
Aug 10, 2002
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net