RHSA-2002:224

Vulnerability from csaf_redhat - Published: 2002-10-25 12:24 - Updated: 2025-11-21 17:25
Summary
Red Hat Security Advisory: ypserv security update
Severity
Important
Notes
Topic: Updated ypserv packages which fix a memory leak are now available for Red Hat Linux Advanced Server. [Updated 08 Jan 2003] Added fixed packages for the Itanium (IA64) architecture. [Updated 06 Feb 2003] Added fixed packages for Advanced Workstation 2.1
Details: ypserv is an NIS authentication server. ypserv versions before 2.5 contain a memory leak that can be triggered remotely. When someone requests a map that doesn't exist, a previous mapname may be leaked. This happens, for instance, if you run "ypmatch foo aaaaaaaaaaaaaaaaaaaa". Repeated runs will result in the yp server using more and more memory, and running more slowly. It could also result in ypserv being killed due to the system being out of memory. This errata updates Red Hat Advanced Server 2.1 to a patched version of ypserv that doesn't have the memory leak.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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.

Affected products
Product Identifier Version Remediation
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
Red Hat / Red Hat Advanced Products
 cpe:/o:redhat:enterprise_linux:2.1::as —
Vendor Fix fix
Red Hat Linux Advanced Workstation 2.1
Red Hat / Red Hat Advanced Products
 cpe:/o:redhat:enterprise_linux:2.1::aw —
Vendor Fix fix
Threats
Impact Important
References
To clipboard 

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        "text": "Updated ypserv packages which fix a memory leak are now available for Red\nHat Linux Advanced Server.\n\n[Updated 08 Jan 2003]\nAdded fixed packages for the Itanium (IA64) architecture.\n\n[Updated 06 Feb 2003]\nAdded fixed packages for Advanced Workstation 2.1",
        "title": "Topic"
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        "text": "ypserv is an NIS authentication server. ypserv versions before 2.5 contain\na memory leak that can be triggered remotely.\n\nWhen someone requests a map that doesn\u0027t exist, a previous mapname may be\nleaked. This happens, for instance, if you run \"ypmatch foo\naaaaaaaaaaaaaaaaaaaa\". Repeated runs will result in the yp server using\nmore and more memory, and running more slowly.  It could also result in\nypserv being killed due to the system being out of memory.\n\nThis errata updates Red Hat Advanced Server 2.1 to a patched version of\nypserv that doesn\u0027t have the memory leak.",
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          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade.  Only those\nRPMs which are currently installed will be updated.  Those RPMs which are\nnot installed but included in the list will not be updated.  Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network.  Many\npeople find this an easier way to apply updates.  To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
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