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Home >> Browse Vulnerability Assessment Database >> Red Hat Local Security Checks >> RHSA-2002-180: nss_ldap


Vulnerability Assessment Details

RHSA-2002-180: nss_ldap

Vulnerability Assessment Summary
Check for the version of the nss_ldap packages

Detailed Explanation for this Vulnerability Assessment


Updated nss_ldap packages are now available for Red Hat Linux Advanced
Server 2.1. These updates fix a potential buffer overflow which can occur
when nss_ldap is set to configure itself using information stored in DNS
as well as a format string bug in logging functions used in pam_ldap.

[Updated 09 Jan 2003]
Added fixed packages for the Itanium (IA64) architecture.

[Updated 06 Feb 2003]
Added fixed packages for Advanced Workstation 2.1

nss_ldap is a set of C library extensions that permit X.500 and LDAP
directory servers to be used as a primary source of aliases, ethers,
groups, hosts, networks, protocols, users, RPCs, services, and shadow
passwords (instead of or in addition to using flat files or NIS).

When versions of nss_ldap prior to nss_ldap-198 are configured without a
value for the "host" setting, nss_ldap will attempt to configure itself by
using SRV records stored in DNS. When parsing the results of the DNS
query, nss_ldap does not check that data returned by the server will fit
into an internal buffer, leaving it vulnerable to a buffer overflow
The Common Vulnerabilities and Exposures project has assigned the name
CVE-2002-0825 to this issue.

When versions of nss_ldap prior to nss_ldap-199 are configured without a
value for the "host" setting, nss_ldap will attempt to configure itself by
using SRV records stored in DNS. When parsing the results of the DNS
query, nss_ldap does not check that the data returned has not been
truncated by the resolver libraries to avoid a buffer overflow, and may
attempt to parse more data than is actually available, leaving it
vulnerable to a read buffer overflow.

Versions of pam_ldap prior to version 144 include a format string bug in
the logging function. The packages included in this erratum update pam_ldap
to version 144, fixing this bug. The Common Vulnerabilities and Exposures
project has assigned the name CVE-2002-0374 to this issue.

All users of nss_ldap should update to these errata packages which are not
vulnerable to the above issues. These packages are based on nss_ldap-189
with the addition of a backported security patch and pam_ldap version 144.

Thanks to the nss_ldap and pam_ldap team at padl.com for providing
information about these issues.




Solution : http://rhn.redhat.com/errata/RHSA-2002-180.html
Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security

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