MIT Kerberos up to 5-1.9.1 Key Distribution Center lookup_lockout_policy input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in MIT Kerberos up to 5-1.9.1. This impacts the function lookup_lockout_policy of the component Key Distribution Center. The manipulation results in input validation. This vulnerability was named CVE-2011-1529. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in MIT Kerberos up to 5-1.9.1 (Network Authentication Software). Affected is the function lookup_lockout_policy of the component Key Distribution Center. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.

The weakness was presented 10/20/2011 as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is traded as CVE-2011-1529. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/04/2024).

The vulnerability scanner Nessus provides a plugin with the ID 69574 (Amazon Linux AMI : krb5 (ALAS-2011-15)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195242 (Ubuntu Security Notification for Krb5 Vulnerabilities (USN-1233-1)).

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 (70751), Tenable (69574), SecurityFocus (BID 50273†) and Vulnerability Center (SBV-33678†). See VDB-59179, VDB-59177 and VDB-59176 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69574
Nessus Name: Amazon Linux AMI : krb5 (ALAS-2011-15)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 70698
OpenVAS Name: Debian Security Advisory DSA 2379-1 (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: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

03/29/2011 🔍
10/19/2011 +204 days 🔍
10/20/2011 +1 days 🔍
10/20/2011 +0 days 🔍
10/20/2011 +0 days 🔍
10/31/2011 +11 days 🔍
03/23/2015 +1239 days 🔍
08/04/2024 +3422 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: RHSA-2011:1379
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1529 (🔍)
GCVE (CVE): GCVE-0-2011-1529
GCVE (VulDB): GCVE-100-59178

OVAL: 🔍

CERT: 🔍
X-Force: 70751
SecurityFocus: 50273 - MIT Kerberos Multiple Denial of Service Vulnerabilities
Vulnerability Center: 33678 - MIT Kerberos 5 1.8-1.8.4 and 1.9-1.9.1 KDC\x27s \x27lookup_lockout_policy\x27 Remote DoS Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 08/04/2024 09:04
Changes: 03/23/2015 16:50 (63), 04/04/2017 11:32 (9), 11/24/2021 14:40 (5), 11/24/2021 14:42 (1), 08/04/2024 09:04 (16)
Complete: 🔍
Cache ID: 216:B4A:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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