MIT Kerberos up to 5-1.9 Key Distribution Center null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in MIT Kerberos up to 5-1.9. It has been classified as problematic. This impacts an unknown function of the component Key Distribution Center. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2011-0282. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in MIT Kerberos up to 5-1.9 (Network Authentication Software). This affects an unknown code block of the component Key Distribution Center. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (NULL pointer dereference or buffer over-read, and daemon crash) via a crafted principal name.

The weakness was shared 02/10/2011 (Website). It is possible to read the advisory at xforce.iss.net. This vulnerability is uniquely identified as CVE-2011-0282. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 53418 (CentOS 5 : krb5 (CESA-2011:0199)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155521 (Oracle Enterprise Linux Update for krb5 (ELSA-2011-0199)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (65323), Tenable (53418), SecurityFocus (BID 46271†), SecurityTracker (ID 1025037†) and Vulnerability Center (SBV-29747†). The entries VDB-56440 and VDB-56438 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Network Authentication Software

Vendor

• MIT

Name

• Kerberos

Version

• 5-1.6
• 5-1.6.1
• 5-1.6.2
• 5-1.6.3
• 5-1.7
• 5-1.7.1
• 5-1.8
• 5-1.8.1
• 5-1.8.2
• 5-1.8.3
• 5-1.9

License

• open-source

Website

• Vendor: http://www.mit.edu/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 53418
Nessus Name: CentOS 5 : krb5 (CESA-2011:0199)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 69597
OpenVAS Name: FreeBSD Ports: krb5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2011 🔍
02/08/2011 +36 days 🔍
02/08/2011 +0 days 🔍
02/10/2011 +2 days 🔍
02/10/2011 +0 days 🔍
02/14/2011 +4 days 🔍
03/20/2015 +1495 days 🔍
12/29/2024 +3572 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: RHSA-2011:0199
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0282 (🔍)
GCVE (CVE): GCVE-0-2011-0282
GCVE (VulDB): GCVE-100-56439

OVAL: 🔍
IAVM: 🔍

X-Force: 65323
SecurityFocus: 46271 - MIT Kerberos KDC Principal Name LDAP Request NULL Pointer Denial Of Service Vulnerability
Secunia: 43260
SecurityTracker: 1025037
Vulnerability Center: 29747 - MIT Kerberos 5 KDC Remote DoS Vulnerability via a Crafted Principal Name, Medium

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 12/29/2024 23:39
Changes: 03/20/2015 16:16 (62), 03/15/2017 12:44 (10), 10/16/2021 17:01 (6), 10/16/2021 17:09 (1), 12/29/2024 23:39 (15)
Complete: 🔍
Cache ID: 216:372:103

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

Discussion

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