Apache Jakarta Tomcat up to 5.x der_get_oid heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apache Jakarta Tomcat up to 5.x. This affects the function der_get_oid. Performing a manipulation results in heap-based overflow. This vulnerability was named CVE-2006-5989. In addition, an exploit is available. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apache Jakarta Tomcat up to 5.x. This affects the function der_get_oid. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Off-by-one error in the der_get_oid function in mod_auth_kerb 5.0 allows remote attackers to cause a denial of service (crash) via a crafted Kerberos message that triggers a heap-based buffer overflow in the component array.

The bug was discovered 11/21/2006. The weakness was presented 11/21/2006 by Josh Bressers with Red Hat as Bug 216482 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2006-5989 since 11/20/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a exploit are known.

It is declared as functional. The vulnerability scanner Nessus provides a plugin with the ID 67427 (Oracle Linux 4 : mod_auth_kerb (ELSA-2006-0746)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156233 (Oracle Enterprise Linux Update for mod_auth_kerb (ELSA-2006:0746)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at sourceforge.net.It is possible to mitigate the weakness by firewalling . The best possible mitigation is suggested to be applying a restrictive firewalling. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (30456), Tenable (67427), SecurityFocus (BID 21214†), OSVDB (30548†) and Secunia (SA23820†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67427
Nessus Name: Oracle Linux 4 : mod_auth_kerb (ELSA-2006-0746)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57788
OpenVAS Name: Debian Security Advisory DSA 1247-1 (libapache-mod-auth-kerb)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: sourceforge.net

Timelineinfo

11/20/2006 🔍
11/20/2006 +0 days 🔍
11/20/2006 +0 days 🔍
11/21/2006 +1 days 🔍
11/21/2006 +0 days 🔍
11/21/2006 +0 days 🔍
11/21/2006 +0 days 🔍
11/27/2006 +5 days 🔍
11/29/2006 +2 days 🔍
12/07/2006 +8 days 🔍
01/08/2007 +32 days 🔍
01/23/2007 +15 days 🔍
07/12/2013 +2362 days 🔍
04/28/2026 +4672 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: Bug 216482
Researcher: Josh Bressers
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-5989 (🔍)
GCVE (CVE): GCVE-0-2006-5989
GCVE (VulDB): GCVE-100-2703

OVAL: 🔍

X-Force: 30456 - Apache mod_auth_kerb off-by-one buffer overflow, High Risk
SecurityFocus: 21214 - Apache Mod_Auth_Kerb Off-By-One Denial of Service Vulnerability
Secunia: 23820 - Gentoo update for mod-auth-kerb, Moderately Critical
OSVDB: 30548 - mod_auth_kerb der_get_oid() Function Off-By-One Error
SecurityTracker: 1017348
Vulnerability Center: 13172 - Apache mod_auth_kerb 5.0-5.2 Remote Denial of Service via a Crafted Kerberos Message, High
Vupen: ADV-2006-4633

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/27/2006 09:42
Updated: 04/28/2026 00:32
Changes: 11/27/2006 09:42 (104), 07/11/2019 09:44 (1), 06/15/2025 16:06 (18), 04/28/2026 00:32 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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