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Security Advisory pam security update

Advisory: RHSA-2003:028-12
Type: Security Advisory
Severity: Important
Issued on: 2003-01-28
Last updated on: 2003-03-19
Affected Products: Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux WS (v. 2.1)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor
CVEs (cve.mitre.org): CVE-2002-1160

Details

Updated PAM packages are now available. These packages correct a bug in
pam_xauth's handling of authorization data for the root user.

[Updated 12 March 2003]
Added packages for Red Hat Enterprise Linux ES and Red Hat Enterprise
Linux WS

The pam_xauth module is used to forward xauth information from user to user
in applications such as the su command.

Andreas Beck discovered that pam_xauth will forward authorization
information from the root account to unprivileged users. This could be
used by a local attacker to gain access to an administrator's X session.
To exploit this vulnerability the attacker would have to get the
administrator, as root, to use su to access the account belonging to the
attacker.

Users of pam_xauth are advised to upgrade to these errata packages which
contain a patch which adds ACL (access control list) functionality to
pam_xauth and disallows root forwarding by default.

Thanks to Andreas Beck for reporting this issue.


Solution

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

This update is available via Red Hat Network. 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.

Updated packages

Red Hat Enterprise Linux AS (v. 2.1)

SRPMS:
pam-0.75-46.7.3.src.rpm
File outdated by:  RHBA-2005:064
    MD5: 99751631043fbe42f98f8598e74e6d4b
 
IA-32:
pam-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 8ea6d868c28c22d629d2059f1ad72f1b
pam-devel-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 9fef754632838504c0590ba30203a925
 
IA-64:
pam-0.75-46.7.3.ia64.rpm
File outdated by:  RHBA-2005:064
    MD5: dde7fc232d4f07318c01490f6eb619c9
pam-devel-0.75-46.7.3.ia64.rpm
File outdated by:  RHBA-2005:064
    MD5: 4ee1e8cebfe80fd7746fd242b37b7cfa
 
Red Hat Enterprise Linux ES (v. 2.1)

SRPMS:
pam-0.75-46.7.3.src.rpm
File outdated by:  RHBA-2005:064
    MD5: 99751631043fbe42f98f8598e74e6d4b
 
IA-32:
pam-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 8ea6d868c28c22d629d2059f1ad72f1b
pam-devel-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 9fef754632838504c0590ba30203a925
 
Red Hat Enterprise Linux WS (v. 2.1)

SRPMS:
pam-0.75-46.7.3.src.rpm
File outdated by:  RHBA-2005:064
    MD5: 99751631043fbe42f98f8598e74e6d4b
 
IA-32:
pam-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 8ea6d868c28c22d629d2059f1ad72f1b
pam-devel-0.75-46.7.3.i386.rpm
File outdated by:  RHBA-2005:064
    MD5: 9fef754632838504c0590ba30203a925
 
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor

SRPMS:
pam-0.75-46.7.3.src.rpm
File outdated by:  RHBA-2005:064
    MD5: 99751631043fbe42f98f8598e74e6d4b
 
IA-64:
pam-0.75-46.7.3.ia64.rpm
File outdated by:  RHBA-2005:064
    MD5: dde7fc232d4f07318c01490f6eb619c9
pam-devel-0.75-46.7.3.ia64.rpm
File outdated by:  RHBA-2005:064
    MD5: 4ee1e8cebfe80fd7746fd242b37b7cfa
 

References


Keywords

cookies, pam_xauth, root


These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/