RedHat: 'nss_ldap' vulnerabilities
Posted by LinuxSecurity.com Team   
RedHat Linux A race condition has been found in the nss_ldap package. On a systemrunning nscd, a malicious user can cause the system to hang.

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                   Red Hat, Inc. Security Advisory

Synopsis:          Updated nss_ldap packages are now available.
Advisory ID:       RHSA-2000:024-03
Issue date:        2000-10-27
Updated on:        2000-11-27
Product:           Red Hat Linux
Keywords:          N/A
Cross references:  N/A
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1. Topic:

Updated nss_ldap packages are now available for Red Hat Linux 6.1, 6.2, and

7.



2000-11-27: Added packages for Red Hat Linux 7 for Alpha.

2. Relevant releases/architectures:

Red Hat Linux 6.1 - i386, alpha, sparc
Red Hat Linux 6.2 - i386, alpha, sparc
Red Hat Linux 7.0 - i386, alpha

3. Problem description:

A race condition has been found in the nss_ldap package.  On a system
running nscd, a malicious user can cause the system to hang.

4. Solution:

For each RPM for your particular architecture, run:



rpm -Fvh [filename]



where filename is the name of the RPM.

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):

11187 - nss_ldap-106 exposes shadow passwords when nscd active
19923 - nss_ldap has a bug that can deadlock a machine


6. RPMs required:

Red Hat Linux 6.1:

alpha: 
ftp://updates.Red Hat.com/6.1/alpha/nss_ldap-122-1.6.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/6.1/sparc/nss_ldap-122-1.6.sparc.rpm

i386: 
ftp://updates.Red Hat.com/6.1/i386/nss_ldap-122-1.6.i386.rpm

sources: 
ftp://updates.Red Hat.com/6.1/SRPMS/nss_ldap-122-1.6.src.rpm

Red Hat Linux 6.2:

alpha: 
ftp://updates.Red Hat.com/6.2/alpha/nss_ldap-122-1.6.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/sparc/nss_ldap-122-1.6.sparc.rpm

i386: 
ftp://updates.Red Hat.com/6.2/i386/nss_ldap-122-1.6.i386.rpm

sources: 
ftp://updates.Red Hat.com/6.2/SRPMS/nss_ldap-122-1.6.src.rpm

Red Hat Linux 7.0:

alpha: 
ftp://updates.Red Hat.com/7.0/alpha/nss_ldap-122-1.7.alpha.rpm

i386: 
ftp://updates.Red Hat.com/7.0/i386/nss_ldap-122-1.7.i386.rpm

sources: 
ftp://updates.Red Hat.com/7.0/SRPMS/nss_ldap-122-1.7.src.rpm

7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
d6ccb0a79d788abc6b82be62981582dd  6.1/SRPMS/nss_ldap-122-1.6.src.rpm
08d8e980347fe7d81e29e1ca27e7cb09  6.1/alpha/nss_ldap-122-1.6.alpha.rpm
4d47831ae8516106392e74f5e1f2fd02  6.1/i386/nss_ldap-122-1.6.i386.rpm
f12cc2e7f9ab1c5faed9c647bfcbab03  6.1/sparc/nss_ldap-122-1.6.sparc.rpm
d6ccb0a79d788abc6b82be62981582dd  6.2/SRPMS/nss_ldap-122-1.6.src.rpm
08d8e980347fe7d81e29e1ca27e7cb09  6.2/alpha/nss_ldap-122-1.6.alpha.rpm
4d47831ae8516106392e74f5e1f2fd02  6.2/i386/nss_ldap-122-1.6.i386.rpm
f12cc2e7f9ab1c5faed9c647bfcbab03  6.2/sparc/nss_ldap-122-1.6.sparc.rpm
7d3dedc08a5db1c30964389a8a3493ab  7.0/SRPMS/nss_ldap-122-1.7.src.rpm
8c47242abcd4aa16174cb41da27cdd12  7.0/alpha/nss_ldap-122-1.7.alpha.rpm
95337178e79472118cf33b0584462679  7.0/i386/nss_ldap-122-1.7.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/corp/contact.html

You can verify each package with the following command:
    rpm --checksig  

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg 

8. References:

N/A