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Red Hat Security Advisory - Updated nss_ldap packages fix pam_ldap vulnerability
--------------------------------------------------------------------- 
                   Red Hat, Inc. Red Hat Security Advisory 


Synopsis: Updated nss_ldap packages fix pam_ldap vulnerability 
Advisory ID: RHSA-2002:084-17 
Issue date: 2002-05-07 
Updated on: 2002-05-26 
Product: Red Hat Linux 
Keywords: pam_ldap format string syslog security 
Cross references: 
Obsoletes: RHSA-2000:024 
CVE Names: CAN-2002-0374 
--------------------------------------------------------------------- 


1. Topic: 


Updated nss_ldap packages are now available for Red Hat Linux 6.2, 7.0, 
7.1,7.2, and 7.3. These packages fix a string format vulnerability in the 
pam_ldap module. 


2. Relevant releases/architectures: 


Red Hat Linux 6.2 - alpha, i386, sparc 


Red Hat Linux 7.0 - alpha, i386 


Red Hat Linux 7.1 - alpha, i386, ia64 


Red Hat Linux 7.2 - i386, ia64 


Red Hat Linux 7.3 - i386 


3. Problem description: 


The pam_ldap module provides authentication for user access to a system by 
consulting a directory using LDAP. 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 (cve.mitre.org) has 
assigned the name CAN-2002-0374 to this issue. 


Due to differences in the default behavior of the pam_ldap module when 
performing account management, the version of authconfig included in Red 
Hat Linux 7.2 will generate incorrect /etc/pam.d/system-auth files for this 
version of pam_ldap. This update includes an updated version of 
authconfig for Red Hat Linux 7.2 which addresses this problem (versions of 
authconfig included with Red Hat Linux 7, 7.1, and 7.3 are not affected). 


Our thanks go to the pam_ldap team at padl.com for bringing this to our 
attention. 


4. Solution: 


Before applying this update, make sure all previously released errata 
relevant to your system have been applied. 


To update all RPMs for your particular architecture, run: 


rpm -Fvh [filenames] 


where [filenames] is a list of the RPMs you wish to upgrade. Only those 
RPMs which are currently installed will be updated. Those RPMs which are 
not installed but included in the list will not be updated. Note that you 
can also use wildcards (*.rpm) if your current directory *only* contains 
the desired RPMs. 


Please note that this update is also available via Red Hat Network. Many 
people find this an easier way to apply updates. To use Red Hat Network, 
launch the Red Hat Update Agent with the following command: 


up2date 


This will start an interactive process that will result in the appropriate 
RPMs being upgraded on your system. 


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




6. RPMs required: 


Red Hat Linux 6.2: 


SRPMS: 
ftp://updates.redhat.com/6.2/en/os/SRPMS/nss_ldap-189-1.6.2.src.rpm 


alpha: 
ftp://updates.redhat.com/6.2/en/os/alpha/nss_ldap-189-1.6.2.alpha.rpm 


i386: 
ftp://updates.redhat.com/6.2/en/os/i386/nss_ldap-189-1.6.2.i386.rpm 


sparc: 
ftp://updates.redhat.com/6.2/en/os/sparc/nss_ldap-189-1.6.2.sparc.rpm 


Red Hat Linux 7.0: 


SRPMS: 
ftp://updates.redhat.com/7.0/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 


alpha: 
ftp://updates.redhat.com/7.0/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 


i386: 
ftp://updates.redhat.com/7.0/en/os/i386/nss_ldap-189-1.7.i386.rpm 


Red Hat Linux 7.1: 


SRPMS: 
ftp://updates.redhat.com/7.1/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 


alpha: 
ftp://updates.redhat.com/7.1/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 


i386: 
ftp://updates.redhat.com/7.1/en/os/i386/nss_ldap-189-1.7.i386.rpm 


ia64: 
ftp://updates.redhat.com/7.1/en/os/ia64/nss_ldap-189-1.7.ia64.rpm 


Red Hat Linux 7.2: 


SRPMS: 
ftp://updates.redhat.com/7.2/en/os/SRPMS/nss_ldap-189-2.src.rpm 
ftp://updates.redhat.com/7.2/en/os/SRPMS/authconfig-4.1.19.2-1.src.rpm 


i386: 
ftp://updates.redhat.com/7.2/en/os/i386/nss_ldap-189-2.i386.rpm 
ftp://updates.redhat.com/7.2/en/os/i386/authconfig-4.1.19.2-1.i386.rpm 


ia64: 
ftp://updates.redhat.com/7.2/en/os/ia64/nss_ldap-189-2.ia64.rpm 
ftp://updates.redhat.com/7.2/en/os/ia64/authconfig-4.1.19.2-1.ia64.rpm 


Red Hat Linux 7.3: 


SRPMS: 
ftp://updates.redhat.com/7.3/en/os/SRPMS/nss_ldap-189-2.src.rpm 


i386: 
ftp://updates.redhat.com/7.3/en/os/i386/nss_ldap-189-2.i386.rpm 




7. Verification: 


MD5 sum Package Name 
-------------------------------------------------------------------------- 
02160b0b00ebc1f1c7966e3568eaf7f6 6.2/en/os/SRPMS/nss_ldap-189-1.6.2.src.rpm 
b2e869b6aabbd2c2cc64133f684f64bc 6.2/en/os/alpha/nss_ldap-189-1.6.2.alpha.rpm 
8276550d54abfcaccb1e3aa1b6198ffd 6.2/en/os/i386/nss_ldap-189-1.6.2.i386.rpm 
614b76ab7c51ebcc3390651af5c9de80 6.2/en/os/sparc/nss_ldap-189-1.6.2.sparc.rpm 
1eb57f3965d1c68d7891c8a858573ae1 7.0/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 
6f3838a447d9766b782886695df52149 7.0/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 
8484f482a1a6816a0c5e1dade2d7fd33 7.0/en/os/i386/nss_ldap-189-1.7.i386.rpm 
1eb57f3965d1c68d7891c8a858573ae1 7.1/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 
6f3838a447d9766b782886695df52149 7.1/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 
8484f482a1a6816a0c5e1dade2d7fd33 7.1/en/os/i386/nss_ldap-189-1.7.i386.rpm 
5805176343cfd2b7e033ce8cf8d0706d 7.1/en/os/ia64/nss_ldap-189-1.7.ia64.rpm 
7216e533cd6cab1ff4fb46171a585b43 7.2/en/os/SRPMS/authconfig-4.1.19.2-1.src.rpm 
d977011dc7bbc3eea5b3e01ce7d364d9 7.2/en/os/SRPMS/nss_ldap-189-2.src.rpm 
7282baea30503699772dd3e2aa866a11 7.2/en/os/i386/authconfig-4.1.19.2-1.i386.rpm 
d2b2402e6c59f886556872d6b2bc2f16 7.2/en/os/i386/nss_ldap-189-2.i386.rpm 
0c451e5cb1cb7e5a5d7152aa91ee3834 7.2/en/os/ia64/authconfig-4.1.19.2-1.ia64.rpm 
7d07126091032adfdae1d2192b9ca264 7.2/en/os/ia64/nss_ldap-189-2.ia64.rpm 
d977011dc7bbc3eea5b3e01ce7d364d9 7.3/en/os/SRPMS/nss_ldap-189-2.src.rpm 
d2b2402e6c59f886556872d6b2bc2f16 7.3/en/os/i386/nss_ldap-189-2.i386.rpm 
  


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


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


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 <filename> 


8. References: 


http://www.padl.com/OSS/pam_ldap.html 
http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0053.html 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0374 




Copyright(c) 2000, 2001, 2002 Red Hat, Inc. 




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