Advisories

Mandriva Advisories

Package name nss_ldap Date November 7th, 2002 Advisory ID MDKSA-2002:075 Affected versions 7.2, 8.0, 8.1, 8.2, 9.0 Synopsis Updated nss_ldap and pam_ldap packages fix buffer and format string vulnerabilities

Problem Description

A buffer overflow vulnerability exists in nss_ldap versions prior to
198. When nss_ldap is configured without a value for the "host"
keyword, it attempts to configure itself using SRV records stored in
DNS. nss_ldap does not check that the data returned by the DNS query
will fit into an internal buffer, thus exposing it to an overflow.

A similar issue exists in versions of nss_ldap prior to 199 where
nss_ldap does not check that the data returned by the DNS query has not
been truncated by the resolver libraries to avoid a buffer overflow.
This can make nss_ldap attempt to parse more data than what is actually
available, making it vulnerable to a read buffer overflow.

Finally, a format string bug in the logging function of pam_ldap prior
to version 144 exist.

All users are recommended to upgrade to these updated packages. Note
that the nss_ldap packages for 7.2, 8.0, and Single Network Firewall
7.2 contain the pam_ldap modules.

Updated Packages

Mandrakelinux 7.2

 cc7940dc14b61c6bb8a289242a415c39  7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm
fa83615155165f38c3a691767c4d5455  7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrakelinux 8.0

 eb3adc4ce19d132339392c45a5f63a87  8.0/RPMS/nss_ldap-202-1.2mdk.i586.rpm
fa83615155165f38c3a691767c4d5455  8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrakelinux 8.0/PPC

 9e06d1d1e8efcf2ab3e7646fb182edfe  ppc/8.0/RPMS/nss_ldap-202-1.2mdk.ppc.rpm
fa83615155165f38c3a691767c4d5455  ppc/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm

Mandrakelinux 8.1

 d0b134533498411ff84c23c445325d09  8.1/RPMS/nss_ldap-202-1.1mdk.i586.rpm
376bd2062e8fb2128008bc6075bae8d1  8.1/RPMS/pam_ldap-156-1.1mdk.i586.rpm
85ec640296bd1cb5808f9beb7db3a566  8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrakelinux 8.1/IA64

 3e44766f48622b70a4de7b66b959a857  ia64/8.1/RPMS/nss_ldap-202-1.1mdk.ia64.rpm
f22145546bff2930131da1b2503692ce  ia64/8.1/RPMS/pam_ldap-156-1.1mdk.ia64.rpm
85ec640296bd1cb5808f9beb7db3a566  ia64/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrakelinux 8.2

 77cdc3912443eadf59ca53284d0340e2  8.2/RPMS/nss_ldap-202-1.1mdk.i586.rpm
16b952b71669460c7c4b9441b37e2014  8.2/RPMS/pam_ldap-156-1.1mdk.i586.rpm
85ec640296bd1cb5808f9beb7db3a566  8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrakelinux 8.2/PPC

 b5f7f6eab56f68ba432267dc2e84c206  ppc/8.2/RPMS/nss_ldap-202-1.1mdk.ppc.rpm
0b73c3aba3ab7bdd2548a69934fa79f0  ppc/8.2/RPMS/pam_ldap-156-1.1mdk.ppc.rpm
85ec640296bd1cb5808f9beb7db3a566  ppc/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm

Mandrakelinux 9.0

 da577902f504bf8f345446635fcc3cf7  9.0/RPMS/nss_ldap-202-1.1mdk.i586.rpm
b70c25f7b8a3b5f86149dd199003a4ff  9.0/RPMS/pam_ldap-156-1.1mdk.i586.rpm
85ec640296bd1cb5808f9beb7db3a566  9.0/SRPMS/nss_ldap-202-1.1mdk.src.rpm

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0825
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0374
http://www.kb.cert.org/vuls/id/738331
http://www.padl.com/Articles/PotentialBufferOverflowin.html

Upgrade

To upgrade automatically, use MandrivaUpdate.

Verification

Please verify the update prior to upgrading to ensure the integrity of the downloaded package. You can do this with the command :

                rpm --checksig package.rpm
                

You can get the GPG public key of the Mandriva Security Team to verify the GPG signature of each RPM.

If you use MandrivaUpdate, the verification of md5 checksum and GPG signature is performed automatically for you.