Synopsis

Moderate: openssh security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated openssh packages that fix a security issue and various bugs are now
available.

This update has been rated as having moderate security impact by the Red Hat
Security Response Team.

Description

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client and
server.

A flaw was found in the way the ssh server wrote account names to the audit
subsystem. An attacker could inject strings containing parts of audit
messages, which could possibly mislead or confuse audit log parsing tools.
(CVE-2007-3102)

A flaw was found in the way the OpenSSH server processes GSSAPI
authentication requests. When GSSAPI authentication was enabled in the
OpenSSH server, a remote attacker was potentially able to determine if a
username is valid. (CVE-2006-5052)

The following bugs in SELinux MLS (Multi-Level Security) support has also
been fixed in this update:

• It was sometimes not possible to select a SELinux role and level when
  logging in using ssh.
  
• If the user obtained a non-default SELinux role or level, the role change
  was not recorded in the audit subsystem.
  
• In some cases, on labeled networks, sshd allowed logins from level ranges
  it should not allow.
  

The updated packages also contain experimental support for using private
keys stored in PKCS#11 tokens for client authentication. The support is
provided through the NSS (Network Security Services) library.

All users of openssh should upgrade to these updated packages, which
contain patches to correct these issues.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 227733 - [LSPP] unable to ssh into a system as root/auditadm_r
• BZ - 229278 - LSPP: ssh-mls allows a level through that it should not
• BZ - 231695 - LSPP: user unable to ssh to system with user/role/level context
• BZ - 234638 - CVE-2006-5052 GSSAPI information leak
• BZ - 234951 - [LSPP] openssh server fails to parse level correctly
• BZ - 248059 - CVE-2007-3102 audit logging of failed logins

CVEs

• CVE-2006-5052
• CVE-2007-3102

References

• http://www.redhat.com/security/updates/classification/#moderate

Red Hat Enterprise Linux Server 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
x86_64
openssh-4.3p2-24.el5.x86_64.rpm	SHA-256: 365b767b6176c8639bb926196f24b80b7b9475c60ed59bdf8934bedf688f6a67
openssh-askpass-4.3p2-24.el5.x86_64.rpm	SHA-256: 956b0ec2b535ea36fce065269c5d7d9f8e0c17f992f0b1bf3591477ddfc538b2
openssh-clients-4.3p2-24.el5.x86_64.rpm	SHA-256: 0b5c03ec662e9a517592b6053d2180c26684c4f9c3eeaeba8996349fd353583a
openssh-server-4.3p2-24.el5.x86_64.rpm	SHA-256: 53eab42a7e9f12540ea5ba06f1380abe53e912056d1e3eb9989ac1e7dd3ab9ce
ia64
openssh-4.3p2-24.el5.ia64.rpm	SHA-256: 4d7a29842f37444c357c868d5aec1602eb35052a1da856c048d426a5dd6fa065
openssh-askpass-4.3p2-24.el5.ia64.rpm	SHA-256: e8bb3a484433eb158029ca0ee5ed0f64e611060a5cc1b1e2a7e238f41420c81c
openssh-clients-4.3p2-24.el5.ia64.rpm	SHA-256: 7b3b252b5a0620211d00d4ced781031a8964de00057578329d504468265958a5
openssh-server-4.3p2-24.el5.ia64.rpm	SHA-256: f95616115a724d0b9d4b0f61bed4983b2aeee42b37871d014e0f88610231351f
i386
openssh-4.3p2-24.el5.i386.rpm	SHA-256: b67ae4591288e6adc21e8c767a3a98f4227fd70e315dbb612682be03fb45c4d8
openssh-askpass-4.3p2-24.el5.i386.rpm	SHA-256: 8f1ee8f16d1943958e3dd2f8b406394ca4f40c16acefe6f66fc1eebb69caf9ad
openssh-clients-4.3p2-24.el5.i386.rpm	SHA-256: d81e546b5ff225e2352823a5918b8fc2cb6aeec360acecb292c4ca71fb514929
openssh-server-4.3p2-24.el5.i386.rpm	SHA-256: 79fb55abad912b61fcf961d2ded3972095efb78e013e748e496f082367d34d8f

Red Hat Enterprise Linux Workstation 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
x86_64
openssh-4.3p2-24.el5.x86_64.rpm	SHA-256: 365b767b6176c8639bb926196f24b80b7b9475c60ed59bdf8934bedf688f6a67
openssh-askpass-4.3p2-24.el5.x86_64.rpm	SHA-256: 956b0ec2b535ea36fce065269c5d7d9f8e0c17f992f0b1bf3591477ddfc538b2
openssh-clients-4.3p2-24.el5.x86_64.rpm	SHA-256: 0b5c03ec662e9a517592b6053d2180c26684c4f9c3eeaeba8996349fd353583a
openssh-server-4.3p2-24.el5.x86_64.rpm	SHA-256: 53eab42a7e9f12540ea5ba06f1380abe53e912056d1e3eb9989ac1e7dd3ab9ce
i386
openssh-4.3p2-24.el5.i386.rpm	SHA-256: b67ae4591288e6adc21e8c767a3a98f4227fd70e315dbb612682be03fb45c4d8
openssh-askpass-4.3p2-24.el5.i386.rpm	SHA-256: 8f1ee8f16d1943958e3dd2f8b406394ca4f40c16acefe6f66fc1eebb69caf9ad
openssh-clients-4.3p2-24.el5.i386.rpm	SHA-256: d81e546b5ff225e2352823a5918b8fc2cb6aeec360acecb292c4ca71fb514929
openssh-server-4.3p2-24.el5.i386.rpm	SHA-256: 79fb55abad912b61fcf961d2ded3972095efb78e013e748e496f082367d34d8f

Red Hat Enterprise Linux Desktop 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
x86_64
openssh-4.3p2-24.el5.x86_64.rpm	SHA-256: 365b767b6176c8639bb926196f24b80b7b9475c60ed59bdf8934bedf688f6a67
openssh-askpass-4.3p2-24.el5.x86_64.rpm	SHA-256: 956b0ec2b535ea36fce065269c5d7d9f8e0c17f992f0b1bf3591477ddfc538b2
openssh-clients-4.3p2-24.el5.x86_64.rpm	SHA-256: 0b5c03ec662e9a517592b6053d2180c26684c4f9c3eeaeba8996349fd353583a
openssh-server-4.3p2-24.el5.x86_64.rpm	SHA-256: 53eab42a7e9f12540ea5ba06f1380abe53e912056d1e3eb9989ac1e7dd3ab9ce
i386
openssh-4.3p2-24.el5.i386.rpm	SHA-256: b67ae4591288e6adc21e8c767a3a98f4227fd70e315dbb612682be03fb45c4d8
openssh-askpass-4.3p2-24.el5.i386.rpm	SHA-256: 8f1ee8f16d1943958e3dd2f8b406394ca4f40c16acefe6f66fc1eebb69caf9ad
openssh-clients-4.3p2-24.el5.i386.rpm	SHA-256: d81e546b5ff225e2352823a5918b8fc2cb6aeec360acecb292c4ca71fb514929
openssh-server-4.3p2-24.el5.i386.rpm	SHA-256: 79fb55abad912b61fcf961d2ded3972095efb78e013e748e496f082367d34d8f

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
s390x
openssh-4.3p2-24.el5.s390x.rpm	SHA-256: 1d2b338848d824d99d7d7a9a11c361459902dac005d4aaea5f2243ff04b85295
openssh-askpass-4.3p2-24.el5.s390x.rpm	SHA-256: 26d1058773a68b8e752c1d320604614f8d701ff2c273c4ef2ed778f906c72c9b
openssh-clients-4.3p2-24.el5.s390x.rpm	SHA-256: f92532ef573192b4f77d852b540b97252769d15ae22dae892aac8d0541388e98
openssh-server-4.3p2-24.el5.s390x.rpm	SHA-256: 7d0e24685dcb8d40bf10b5d2e4b467a36df889faada439b471d6e00a547e047f

Red Hat Enterprise Linux for Power, big endian 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
ppc
openssh-4.3p2-24.el5.ppc.rpm	SHA-256: 81cdbb2e2a32cf0ac27bb0594eaef3943e797b33af69b5d8f12f7738add73f79
openssh-askpass-4.3p2-24.el5.ppc.rpm	SHA-256: e4e816a781b51a5f97574d8b847d4d4d99fe5bd676e5ee608cba4107a782c90e
openssh-clients-4.3p2-24.el5.ppc.rpm	SHA-256: 8f0418694cc3e34a96db31babeb6d678349f700ffb0a29af363696668d62dd63
openssh-server-4.3p2-24.el5.ppc.rpm	SHA-256: f2d09ae03d55ef9eb94df99b9df661a8426a5d3e106cef2201fb8aed60d3b181

Red Hat Enterprise Linux Server from RHUI 5

SRPM
openssh-4.3p2-24.el5.src.rpm	SHA-256: a01350015219af5fd7f6240fdee758937a62192e59243bae2db18e699d686e45
x86_64
openssh-4.3p2-24.el5.x86_64.rpm	SHA-256: 365b767b6176c8639bb926196f24b80b7b9475c60ed59bdf8934bedf688f6a67
openssh-askpass-4.3p2-24.el5.x86_64.rpm	SHA-256: 956b0ec2b535ea36fce065269c5d7d9f8e0c17f992f0b1bf3591477ddfc538b2
openssh-clients-4.3p2-24.el5.x86_64.rpm	SHA-256: 0b5c03ec662e9a517592b6053d2180c26684c4f9c3eeaeba8996349fd353583a
openssh-server-4.3p2-24.el5.x86_64.rpm	SHA-256: 53eab42a7e9f12540ea5ba06f1380abe53e912056d1e3eb9989ac1e7dd3ab9ce
i386
openssh-4.3p2-24.el5.i386.rpm	SHA-256: b67ae4591288e6adc21e8c767a3a98f4227fd70e315dbb612682be03fb45c4d8
openssh-askpass-4.3p2-24.el5.i386.rpm	SHA-256: 8f1ee8f16d1943958e3dd2f8b406394ca4f40c16acefe6f66fc1eebb69caf9ad
openssh-clients-4.3p2-24.el5.i386.rpm	SHA-256: d81e546b5ff225e2352823a5918b8fc2cb6aeec360acecb292c4ca71fb514929
openssh-server-4.3p2-24.el5.i386.rpm	SHA-256: 79fb55abad912b61fcf961d2ded3972095efb78e013e748e496f082367d34d8f