Executive Summary

Summary
Title krb5 security update
Informations
Name RHSA-2005:330 First vendor Publication 2005-03-30
Vendor RedHat Last vendor Modification 2005-03-30
Severity (Vendor) Important Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated krb5 packages which fix two buffer overflow vulnerabilities in the included Kerberos-aware telnet client are now available.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64 Red Hat Linux Advanced Workstation 2.1 - ia64 Red Hat Enterprise Linux ES version 2.1 - i386 Red Hat Enterprise Linux WS version 2.1 - i386 Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux Desktop version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

Kerberos is a networked authentication system which uses a trusted third party (a KDC) to authenticate clients and servers to each other.

The krb5-workstation package includes a Kerberos-aware telnet client. Two buffer overflow flaws were discovered in the way the telnet client handles messages from a server. An attacker may be able to execute arbitrary code on a victim's machine if the victim can be tricked into connecting to a malicious telnet server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CAN-2005-0468 and CAN-2005-0469 to these issues.

Users of krb5 should update to these erratum packages which contain a backported patch to correct this issue.

Red Hat would like to thank iDEFENSE for their responsible disclosure of this issue.

4. Solution:

Before applying this update, make sure that all previously-released errata relevant to your system have been applied. Use Red Hat Network to download and update your packages. To launch the Red Hat Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the following Web page for the System Administration or Customization guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

151267 -

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2005-330.html

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:9640
 
Oval ID: oval:org.mitre.oval:def:9640
Title: Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.
Description: Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.
Family: unix Class: vulnerability
Reference(s): CVE-2005-0468
Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:9708
 
Oval ID: oval:org.mitre.oval:def:9708
Title: Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.
Description: Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.
Family: unix Class: vulnerability
Reference(s): CVE-2005-0469
Version: 5
Platform(s): Red Hat Enterprise Linux 3
CentOS Linux 3
Red Hat Enterprise Linux 4
CentOS Linux 4
Oracle Linux 4
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2

OpenVAS Exploits

Date Description
2009-10-10 Name : SLES9: Security update for telnet
File : nvt/sles9p5015478.nasl
2009-10-10 Name : SLES9: Security update for heimdal
File : nvt/sles9p5012765.nasl
2009-06-03 Name : Solaris Update for telnet 110669-05
File : nvt/gb_solaris_110669_05.nasl
2009-06-03 Name : Solaris Update for telnet 119434-01
File : nvt/gb_solaris_119434_01.nasl
2009-06-03 Name : Solaris Update for telnet 119433-01
File : nvt/gb_solaris_119433_01.nasl
2009-06-03 Name : Solaris Update for telnet 110668-05
File : nvt/gb_solaris_110668_05.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200503-36 (netkit-telnetd)
File : nvt/glsa_200503_36.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200504-01 (telnet)
File : nvt/glsa_200504_01.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200504-04 (telnet)
File : nvt/glsa_200504_04.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200504-28 (Heimdal)
File : nvt/glsa_200504_28.nasl
2008-09-04 Name : FreeBSD Ports: heimdal
File : nvt/freebsd_heimdal1.nasl
2008-09-04 Name : FreeBSD Security Advisory (FreeBSD-SA-05:01.telnet.asc)
File : nvt/freebsdsa_telnet.nasl
2008-01-17 Name : Debian Security Advisory DSA 697-1 (netkit-telnet)
File : nvt/deb_697_1.nasl
2008-01-17 Name : Debian Security Advisory DSA 765-1 (heimdal)
File : nvt/deb_765_1.nasl
2008-01-17 Name : Debian Security Advisory DSA 731-1 (krb4)
File : nvt/deb_731_1.nasl
2008-01-17 Name : Debian Security Advisory DSA 703-1 (krb5)
File : nvt/deb_703_1.nasl
2008-01-17 Name : Debian Security Advisory DSA 699-1 (netkit-telnet-ssl)
File : nvt/deb_699_1.nasl
0000-00-00 Name : Slackware Advisory SSA:2005-210-01 telnet client
File : nvt/esoft_slk_ssa_2005_210_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
15094 Multiple Vendor Telnet slc_add_reply Function Remote Overflow

15093 Multiple Vendor Telnet env_opt_add Function Remote Overflow

Snort® IPS/IDS

Date Description
2014-01-10 client ENV OPT escape overflow attempt
RuleID : 3537 - Revision : 11 - Type : PROTOCOL-TELNET
2014-01-10 client LINEMODE SLC overflow attempt
RuleID : 3533 - Revision : 12 - Type : PROTOCOL-TELNET
2014-01-10 Client env_opt_add Buffer Overflow attempt
RuleID : 25856 - Revision : 3 - Type : PROTOCOL-TELNET
2014-01-10 Client env_opt_add Buffer Overflow attempt
RuleID : 17269 - Revision : 6 - Type : PROTOCOL-TELNET

Nessus® Vulnerability Scanner

Date Description
2012-09-24 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-270.nasl - Type : ACT_GATHER_INFO
2012-01-12 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-773.nasl - Type : ACT_GATHER_INFO
2006-07-03 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2005-330.nasl - Type : ACT_GATHER_INFO
2006-05-13 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_b62c80c2b81a11dabec500123ffe8333.nasl - Type : ACT_GATHER_INFO
2006-01-21 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-224-1.nasl - Type : ACT_GATHER_INFO
2006-01-15 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-101-1.nasl - Type : ACT_GATHER_INFO
2005-10-05 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2005-210-01.nasl - Type : ACT_GATHER_INFO
2005-09-12 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-274.nasl - Type : ACT_GATHER_INFO
2005-07-22 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-765.nasl - Type : ACT_GATHER_INFO
2005-06-17 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-731.nasl - Type : ACT_GATHER_INFO
2005-05-19 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-269.nasl - Type : ACT_GATHER_INFO
2005-05-19 Name : The remote Fedora Core host is missing a security update.
File : fedora_2005-277.nasl - Type : ACT_GATHER_INFO
2005-04-29 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200504-28.nasl - Type : ACT_GATHER_INFO
2005-04-06 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200504-04.nasl - Type : ACT_GATHER_INFO
2005-04-02 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200504-01.nasl - Type : ACT_GATHER_INFO
2005-04-02 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-703.nasl - Type : ACT_GATHER_INFO
2005-04-01 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200503-36.nasl - Type : ACT_GATHER_INFO
2005-03-30 Name : The remote Mandrake Linux host is missing one or more security updates.
File : mandrake_MDKSA-2005-061.nasl - Type : ACT_GATHER_INFO
2005-03-30 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2005-330.nasl - Type : ACT_GATHER_INFO
2005-03-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-699.nasl - Type : ACT_GATHER_INFO
2005-03-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-697.nasl - Type : ACT_GATHER_INFO
2005-03-29 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2005-327.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:49:12
  • Multiple Updates