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RHEL 4 : openssh (RHSA-2005:527)

medium Nessus Plugin ID 19990

Synopsis

The remote Red Hat host is missing one or more security updates for openssh.

Description

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2005:527 advisory.

 OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation.

 An error in the way OpenSSH handled GSSAPI credential delegation was discovered. OpenSSH as distributed with Red Hat Enterprise Linux 4 contains support for GSSAPI user authentication, typically used for supporting Kerberos. On OpenSSH installations which have GSSAPI enabled, this flaw could allow a user who sucessfully authenticates using a method other than GSSAPI to be delegated with GSSAPI credentials. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-2798 to this issue.

 Additionally, the following bugs have been addressed:

 The ssh command incorrectly failed when it was issued by the root user with a non-default group set.

 The sshd daemon could fail to properly close the client connection if multiple X clients were forwarded over the connection and the client session exited.

 The sshd daemon could bind only on the IPv6 address family for X forwarding if the port on IPv4 address family was already bound. The X forwarding did not work in such cases.

 This update also adds support for recording login user IDs for the auditing service. The user ID is attached to the audit records generated from the user's session.

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

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL openssh package based on the guidance in RHSA-2005:527.

See Also

http://www.nessus.org/u?b9a69078

https://access.redhat.com/security/updates/classification/#moderate

https://bugzilla.redhat.com/show_bug.cgi?id=159331

https://bugzilla.redhat.com/show_bug.cgi?id=167444

https://access.redhat.com/errata/RHSA-2005:527

Plugin Details

Severity: Medium

ID: 19990

File Name: redhat-RHSA-2005-527.nasl

Version: 1.26

Type: local

Agent: unix

Published: 10/11/2005

Updated: 11/4/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2008-1483

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:openssh-askpass, p-cpe:/a:redhat:enterprise_linux:openssh, p-cpe:/a:redhat:enterprise_linux:openssh-server, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:openssh-askpass-gnome, p-cpe:/a:redhat:enterprise_linux:openssh-clients

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 10/5/2005

Vulnerability Publication Date: 9/6/2005

Reference Information

CVE: CVE-2005-2798, CVE-2008-1483

RHSA: 2005:527