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Security Advisory openssh security update

Advisory: RHSA-2005:106-04
Type: Security Advisory
Severity: Low
Issued on: 2005-05-18
Last updated on: 2005-05-18
Affected Products: Red Hat Desktop (v. 3)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux WS (v. 3)
CVEs (cve.mitre.org): CVE-2004-0175

Details

Updated openssh packages that fix a potential security vulnerability and
various other bugs are now available for Red Hat Enterprise Linux 3.

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

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. SSH
replaces rlogin and rsh, and provides secure encrypted communications
between two untrusted hosts over an insecure network. X11 connections and
arbitrary TCP/IP ports can also be forwarded over a secure channel. Public
key authentication can be used for "passwordless" access to servers.

The scp protocol allows a server to instruct a client to write to arbitrary
files outside of the current directory. This could potentially cause a
security issue if a user uses scp to copy files from a malicious server.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2004-0175 to this issue.

These updated packages also correct the following bugs:

On systems where direct ssh access for the root user was disabled by
configuration (setting "PermitRootLogin no"), attempts to guess the root
password could be judged as sucessful or unsucessful by observing a delay.

On systems where the privilege separation feature was turned on, the user
resource limits were not correctly set if the configuration specified to
raise them above the defaults. It was also not possible to change an
expired password.

Users of openssh should upgrade to these updated packages, which contain
backported patches to resolve these issues.


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.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate. The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

Updated packages

Red Hat Desktop (v. 3)

SRPMS:
openssh-3.6.1p2-33.30.4.src.rpm
File outdated by:  RHBA-2007:0462
    MD5: 7b60311a6205015c1424255894ca4543
 
IA-32:
openssh-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 0632bc50698ebced00b31dbbfc077e76
openssh-askpass-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c4bee6055d508780f44a928f707a2942
openssh-askpass-gnome-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 5f5a04f9ca345ac8a5344754eddd02c6
openssh-clients-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: eac41215547b25b22bc3d9a04544e39b
openssh-server-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c2f2365016bfb9edf13a2480c6d15c34
 
x86_64:
openssh-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 82a0cd578d39f1063764c4552e2a20a0
openssh-askpass-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 6ca6fdf9cbd4dcfda939b0034fd173c5
openssh-askpass-gnome-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 22e7c2186dba1af27e4c593f5c78df3b
openssh-clients-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: e7ddaf24841bcdfae67e01d7be62bfcd
openssh-server-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cb07647a04a3c4e1727f302da26102be
 
Red Hat Enterprise Linux AS (v. 3)

SRPMS:
openssh-3.6.1p2-33.30.4.src.rpm
File outdated by:  RHBA-2007:0462
    MD5: 7b60311a6205015c1424255894ca4543
 
IA-32:
openssh-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 0632bc50698ebced00b31dbbfc077e76
openssh-askpass-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c4bee6055d508780f44a928f707a2942
openssh-askpass-gnome-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 5f5a04f9ca345ac8a5344754eddd02c6
openssh-clients-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: eac41215547b25b22bc3d9a04544e39b
openssh-server-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c2f2365016bfb9edf13a2480c6d15c34
 
IA-64:
openssh-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cc138291b474a67970caa97bfad1c9b4
openssh-askpass-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: dbad4a3430f94fa2be8563feec3f1ff3
openssh-askpass-gnome-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cfbb0ef73bf3a47f54a99511748bd907
openssh-clients-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: f4a09d1562bec81d463a5067dc61d9f1
openssh-server-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 1e333c07f46051095636411a3bb590db
 
PPC:
openssh-3.6.1p2-33.30.4.ppc.rpm
File outdated by:  RHBA-2007:0462
    MD5: cc038b17c27936940e3819b17bf11956
openssh-askpass-3.6.1p2-33.30.4.ppc.rpm
File outdated by:  RHBA-2007:0462
    MD5: 79bef55a16572ac51b81cdb39b14a01e
openssh-askpass-gnome-3.6.1p2-33.30.4.ppc.rpm
File outdated by:  RHBA-2007:0462
    MD5: 96505d5f6b55d00f17dd2c4b053bed8e
openssh-clients-3.6.1p2-33.30.4.ppc.rpm
File outdated by:  RHBA-2007:0462
    MD5: 935fafdfab1cf6a2b7479c4f0d8c6275
openssh-server-3.6.1p2-33.30.4.ppc.rpm
File outdated by:  RHBA-2007:0462
    MD5: 1e61209b257a8463aff9b5a58ce69bf5
 
s390:
openssh-3.6.1p2-33.30.4.s390.rpm
File outdated by:  RHBA-2007:0462
    MD5: e083bf6bdb36b498b49813b39da29cda
openssh-askpass-3.6.1p2-33.30.4.s390.rpm
File outdated by:  RHBA-2007:0462
    MD5: ee6c07b7c35db92766b9988d89c29822
openssh-askpass-gnome-3.6.1p2-33.30.4.s390.rpm
File outdated by:  RHBA-2007:0462
    MD5: b32f9f334ed9f3f6060ebfa5ea85ac2c
openssh-clients-3.6.1p2-33.30.4.s390.rpm
File outdated by:  RHBA-2007:0462
    MD5: c6b895eb572e105ff777536f4c476079
openssh-server-3.6.1p2-33.30.4.s390.rpm
File outdated by:  RHBA-2007:0462
    MD5: 4d0442b0e84c30d69046543d214e41df
 
s390x:
openssh-3.6.1p2-33.30.4.s390x.rpm
File outdated by:  RHBA-2007:0462
    MD5: e27813586fe755d41cfe7ac09ca7e645
openssh-askpass-3.6.1p2-33.30.4.s390x.rpm
File outdated by:  RHBA-2007:0462
    MD5: 8f3087efbde89ed9512c44a335686da0
openssh-askpass-gnome-3.6.1p2-33.30.4.s390x.rpm
File outdated by:  RHBA-2007:0462
    MD5: f14783534ab464aa5086548846b9a19c
openssh-clients-3.6.1p2-33.30.4.s390x.rpm
File outdated by:  RHBA-2007:0462
    MD5: f044e71865f218b35558163fe81b3791
openssh-server-3.6.1p2-33.30.4.s390x.rpm
File outdated by:  RHBA-2007:0462
    MD5: 975d8accdeae65a76420ac99d44b5644
 
x86_64:
openssh-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 82a0cd578d39f1063764c4552e2a20a0
openssh-askpass-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 6ca6fdf9cbd4dcfda939b0034fd173c5
openssh-askpass-gnome-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 22e7c2186dba1af27e4c593f5c78df3b
openssh-clients-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: e7ddaf24841bcdfae67e01d7be62bfcd
openssh-server-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cb07647a04a3c4e1727f302da26102be
 
Red Hat Enterprise Linux ES (v. 3)

SRPMS:
openssh-3.6.1p2-33.30.4.src.rpm
File outdated by:  RHBA-2007:0462
    MD5: 7b60311a6205015c1424255894ca4543
 
IA-32:
openssh-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 0632bc50698ebced00b31dbbfc077e76
openssh-askpass-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c4bee6055d508780f44a928f707a2942
openssh-askpass-gnome-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 5f5a04f9ca345ac8a5344754eddd02c6
openssh-clients-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: eac41215547b25b22bc3d9a04544e39b
openssh-server-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c2f2365016bfb9edf13a2480c6d15c34
 
IA-64:
openssh-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cc138291b474a67970caa97bfad1c9b4
openssh-askpass-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: dbad4a3430f94fa2be8563feec3f1ff3
openssh-askpass-gnome-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cfbb0ef73bf3a47f54a99511748bd907
openssh-clients-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: f4a09d1562bec81d463a5067dc61d9f1
openssh-server-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 1e333c07f46051095636411a3bb590db
 
x86_64:
openssh-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 82a0cd578d39f1063764c4552e2a20a0
openssh-askpass-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 6ca6fdf9cbd4dcfda939b0034fd173c5
openssh-askpass-gnome-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 22e7c2186dba1af27e4c593f5c78df3b
openssh-clients-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: e7ddaf24841bcdfae67e01d7be62bfcd
openssh-server-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cb07647a04a3c4e1727f302da26102be
 
Red Hat Enterprise Linux WS (v. 3)

SRPMS:
openssh-3.6.1p2-33.30.4.src.rpm
File outdated by:  RHBA-2007:0462
    MD5: 7b60311a6205015c1424255894ca4543
 
IA-32:
openssh-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 0632bc50698ebced00b31dbbfc077e76
openssh-askpass-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c4bee6055d508780f44a928f707a2942
openssh-askpass-gnome-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: 5f5a04f9ca345ac8a5344754eddd02c6
openssh-clients-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: eac41215547b25b22bc3d9a04544e39b
openssh-server-3.6.1p2-33.30.4.i386.rpm
File outdated by:  RHBA-2007:0462
    MD5: c2f2365016bfb9edf13a2480c6d15c34
 
IA-64:
openssh-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cc138291b474a67970caa97bfad1c9b4
openssh-askpass-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: dbad4a3430f94fa2be8563feec3f1ff3
openssh-askpass-gnome-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cfbb0ef73bf3a47f54a99511748bd907
openssh-clients-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: f4a09d1562bec81d463a5067dc61d9f1
openssh-server-3.6.1p2-33.30.4.ia64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 1e333c07f46051095636411a3bb590db
 
x86_64:
openssh-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 82a0cd578d39f1063764c4552e2a20a0
openssh-askpass-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 6ca6fdf9cbd4dcfda939b0034fd173c5
openssh-askpass-gnome-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: 22e7c2186dba1af27e4c593f5c78df3b
openssh-clients-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: e7ddaf24841bcdfae67e01d7be62bfcd
openssh-server-3.6.1p2-33.30.4.x86_64.rpm
File outdated by:  RHBA-2007:0462
    MD5: cb07647a04a3c4e1727f302da26102be
 

Bugs fixed (see bugzilla for more information)

120147 - CAN-2004-0175 malicious ssh server can cause scp to write to arbitrary files
124602 - OpenSSH does not allow users to change expired passwords when privsep is used
141642 - SSH allows attacker to divine root password


References


Keywords

expiration, limits, password, privilege, scp, separation


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/