Rapid7 Vulnerability & Exploit Database

RHSA-2002:180: nss_ldap ecurity update

Back to Search

RHSA-2002:180: nss_ldap ecurity update

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
08/12/2002
Created
07/25/2018
Added
10/28/2005
Modified
07/12/2017

Description

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 allow 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 CAN-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 CAN-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(s)

  • redhat-upgrade-nss_ldap

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;