MIT Kerberos up to 5-1.5.1 xprt->xp_auth memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability, which was classified as critical, was found in MIT Kerberos up to 5-1.5.1 (Network Authentication Software). Affected is the function xprt->xp_auth. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The RPC library in Kerberos 5 1.4 through 1.4.4, and 1.5 through 1.5.1, as used in Kerberos administration daemon (kadmind) and other products that use this library, calls an uninitialized function pointer in freed memory, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.

The bug was discovered 01/09/2007. The weakness was published 01/10/2007 by Andrew Korty with Indiana University (Website). The advisory is shared for download at web.mit.edu. This vulnerability is traded as CVE-2006-6143 since 11/28/2006. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 27996 (Ubuntu 6.06 LTS / 6.10 : krb5 vulnerability (USN-408-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165095 (SUSE Security Update for krb5 (SUSE-SA:2007:004)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at web.mit.edu. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (31422), Tenable (27996), SecurityFocus (BID 21970†), OSVDB (31281†) and Secunia (SA23903†). Similar entry is available at VDB-2822. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 27996
Nessus Name: Ubuntu 6.06 LTS / 6.10 : krb5 vulnerability (USN-408-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 861084
OpenVAS Name: Family Connections argv[1] Parameter Remote Arbitrary Command Execution Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: web.mit.edu

Timelineinfo

11/28/2006 🔍
12/31/2006 +33 days 🔍
01/09/2007 +9 days 🔍
01/09/2007 +0 days 🔍
01/09/2007 +0 days 🔍
01/10/2007 +1 days 🔍
01/10/2007 +0 days 🔍
01/10/2007 +0 days 🔍
01/12/2007 +1 days 🔍
01/21/2007 +9 days 🔍
01/24/2007 +3 days 🔍
01/25/2007 +1 days 🔍
11/10/2007 +289 days 🔍
01/18/2025 +6279 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: web.mit.edu
Researcher: Andrew Korty
Organization: Indiana University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-6143 (🔍)
GCVE (CVE): GCVE-0-2006-6143
GCVE (VulDB): GCVE-100-2820
CERT: 🔍
X-Force: 31422 - Kerberos RPC library code execution, High Risk
SecurityFocus: 21970 - MIT Kerberos 5 RPC Library Remote Code Execution Vulnerability
Secunia: 23903 - Gentoo update for mit-krb5, Highly Critical
OSVDB: 31281 - MIT Kerberos RPC Library xprt->xp_auth Code Execution
SecurityTracker: 1017493
Vulnerability Center: 14078 - Kerberos Administration Daemon RPC Library Vulnerability, Critical
Vupen: ADV-2007-0111

See also: 🔍

Entryinfo

Created: 01/12/2007 11:06 AM
Updated: 01/18/2025 12:48 PM
Changes: 01/12/2007 11:06 AM (102), 07/13/2019 09:08 PM (2), 01/18/2025 12:48 PM (17)
Complete: 🔍
Cache ID: 18:26B:40

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