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All Products
Red Hat Product Errata RHSA-2013:0521 - Security Advisory
Issued:
2013-02-21
Updated:
2013-02-21

RHSA-2013:0521 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Moderate: pam security, bug fix, and enhancement update

Type/Severity

Security Advisory: Moderate

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

Updated pam packages that fix two security issues, several bugs, and add
various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

Description

Pluggable Authentication Modules (PAM) provide a system whereby
administrators can set up authentication policies without having to
recompile programs to handle authentication.

A stack-based buffer overflow flaw was found in the way the pam_env module
parsed users' "~/.pam_environment" files. If an application's PAM
configuration contained "user_readenv=1" (this is not the default), a
local attacker could use this flaw to crash the application or, possibly,
escalate their privileges. (CVE-2011-3148)

A denial of service flaw was found in the way the pam_env module expanded
certain environment variables. If an application's PAM configuration
contained "user_readenv=1" (this is not the default), a local attacker
could use this flaw to cause the application to enter an infinite loop.
(CVE-2011-3149)

Red Hat would like to thank Kees Cook of the Google ChromeOS Team for
reporting the CVE-2011-3148 and CVE-2011-3149 issues.

These updated pam packages include numerous bug fixes and enhancements.
Space precludes documenting all of these changes in this advisory. Users
are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked
to in the References, for information on the most significant of these
changes.

All pam users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues and add these
enhancements.

Solution

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for IBM z Systems 6 s390x
  • Red Hat Enterprise Linux for Power, big endian 6 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

  • BZ - 588893 - pam does not enforce password complexity restrictions on root
  • BZ - 673398 - request for additional pam_cracklib checks
  • BZ - 723297 - limits.conf should mention limits.d directory
  • BZ - 746619 - CVE-2011-3148 pam (pam_env): Stack-based buffer overflow by parsing user's pam_environment file
  • BZ - 746620 - CVE-2011-3149 pam (pam_env): Infinite loop by expanding certain arguments
  • BZ - 750601 - pam_namespace cannot verify status of SELinux in MLS
  • BZ - 811168 - fix pam_get_authtok_verify() to respect the authtok_type= option
  • BZ - 811243 - pam_cracklib: difignore is no-op in the current package - needs man page update
  • BZ - 815516 - pam remember can check wrong username if it is a substring of another username

CVEs

  • CVE-2011-3149
  • CVE-2011-3148

References

  • https://access.redhat.com/security/updates/classification/#moderate
  • https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.4_Technical_Notes/pam.html
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c
i386
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa

Red Hat Enterprise Linux Server - Extended Life Cycle Support 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c
i386
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa

Red Hat Enterprise Linux Workstation 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c
i386
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa

Red Hat Enterprise Linux Desktop 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c
i386
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
s390x
pam-1.1.1-13.el6.s390.rpm SHA-256: 559ac420657ac56b10fd1c60046de1618ec2b7e7c1bd1f35bd60b3e59f44d25b
pam-1.1.1-13.el6.s390x.rpm SHA-256: c5bdb606ce15ee2375402436e30fef09ff0846bea58daf011e556b09fbe743dd
pam-debuginfo-1.1.1-13.el6.s390.rpm SHA-256: 404ac9a9cdb5660ce556b63ef0c671cb9466d49e5da662ce5af580b60b3810fc
pam-debuginfo-1.1.1-13.el6.s390x.rpm SHA-256: 02c2901a90357583327cf8ec9ea6bbeee0b715da786eebfe49d7f521e06e8d3a
pam-devel-1.1.1-13.el6.s390.rpm SHA-256: dc68f5ec61bf2cb11b7cdeb2a3bcdd171ceae0bb0612f8e57feeaf37ff6b246a
pam-devel-1.1.1-13.el6.s390x.rpm SHA-256: 9ef27cf861bd965e38e02d4d502f87f051c110498d27ded092d22958316f8cca

Red Hat Enterprise Linux for Power, big endian 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
ppc64
pam-1.1.1-13.el6.ppc.rpm SHA-256: 2d93095feeea4b5c0eafd145592eec91b37b2f304e938b95b677770be8cca1d5
pam-1.1.1-13.el6.ppc64.rpm SHA-256: 70f009d1126e54de42835002f46dc5760dcc4a632e923f2ae6ae496ca96ba8b7
pam-debuginfo-1.1.1-13.el6.ppc.rpm SHA-256: 294237606c5de9bdd5cbf7fbdf41c76ede730ad0286a29b108b65eeee3f82b5b
pam-debuginfo-1.1.1-13.el6.ppc64.rpm SHA-256: ae04797e801d9d960a0a81549f86b2160539dfb2d2f88a79033b8371c3a6532f
pam-devel-1.1.1-13.el6.ppc.rpm SHA-256: 509f76e45973325199dc4b6b53f7af89995d613ab596d344b9c69a495ab7ec59
pam-devel-1.1.1-13.el6.ppc64.rpm SHA-256: 2457de7503afd1eb05488f9b1d70c18c0be911370442d524bf9772dbd8bfbb93

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c

Red Hat Enterprise Linux Server from RHUI 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
x86_64
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-1.1.1-13.el6.x86_64.rpm SHA-256: aa4e9c082188fed69ac6029f929d7c32934795263b2c3f9e1fbc4e2c2eece013
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-debuginfo-1.1.1-13.el6.x86_64.rpm SHA-256: 6aee81c95202b7e67ea1f330dc1a3e84e7cf2a931f8e85c02bcc1346853dc454
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa
pam-devel-1.1.1-13.el6.x86_64.rpm SHA-256: fcd8e19d8431e2a3acf9886a4e395f5a22eee66331f6b6a4969465485838367c
i386
pam-1.1.1-13.el6.i686.rpm SHA-256: a6b93fd4231e0cbdac1a330bb9820447d1ad1df500b87a895da8ced3619ec4ae
pam-debuginfo-1.1.1-13.el6.i686.rpm SHA-256: efc880ca5b7c3eb1f058fbe213c5d9eb51c33227bcf1bf4e39a9d45e3b6ae74f
pam-devel-1.1.1-13.el6.i686.rpm SHA-256: 6731e8534905149fc52f04630bf1496d7969844df43af1cc4f84f2f481b736fa

Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6

SRPM
pam-1.1.1-13.el6.src.rpm SHA-256: 23d4898760059a930a1cb2c76b814dc36ad48d3a3168f5ad1bdadd026ba40aa6
s390x
pam-1.1.1-13.el6.s390.rpm SHA-256: 559ac420657ac56b10fd1c60046de1618ec2b7e7c1bd1f35bd60b3e59f44d25b
pam-1.1.1-13.el6.s390x.rpm SHA-256: c5bdb606ce15ee2375402436e30fef09ff0846bea58daf011e556b09fbe743dd
pam-debuginfo-1.1.1-13.el6.s390.rpm SHA-256: 404ac9a9cdb5660ce556b63ef0c671cb9466d49e5da662ce5af580b60b3810fc
pam-debuginfo-1.1.1-13.el6.s390x.rpm SHA-256: 02c2901a90357583327cf8ec9ea6bbeee0b715da786eebfe49d7f521e06e8d3a
pam-devel-1.1.1-13.el6.s390.rpm SHA-256: dc68f5ec61bf2cb11b7cdeb2a3bcdd171ceae0bb0612f8e57feeaf37ff6b246a
pam-devel-1.1.1-13.el6.s390x.rpm SHA-256: 9ef27cf861bd965e38e02d4d502f87f051c110498d27ded092d22958316f8cca

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

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