MIT Kerberos up to 5-1.9.1 Key Distribution Center krb5_ldap_lockout_audit input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic has been found in MIT Kerberos up to 5-1.9.1. This affects the function krb5_ldap_lockout_audit of the component Key Distribution Center. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2011-1528. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in MIT Kerberos up to 5-1.9.1 (Network Authentication Software). This issue affects the function krb5_ldap_lockout_audit of the component Key Distribution Center. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

The krb5_ldap_lockout_audit 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 LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151.

The weakness was disclosed 10/20/2011 as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2011-1528. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/04/2024).

The vulnerability scanner Nessus provides a plugin with the ID 80650 (Oracle Solaris Third-Party Patch Update : kerberos (multiple_input_validation_vulnerabilities_in)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Solaris 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 (70750), Tenable (80650), SecurityFocus (BID 50273†) and Vulnerability Center (SBV-33677†). The entries VDB-59179, VDB-59178 and VDB-59176 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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: 80650
Nessus Name: Oracle Solaris Third-Party Patch Update : kerberos (multiple_input_validation_vulnerabilities_in)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

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: 🔍

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 🔍
01/19/2015 +1176 days 🔍
03/23/2015 +63 days 🔍
08/04/2024 +3422 days 🔍

Sourcesinfo

Vendor: mit.edu

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

CVE: CVE-2011-1528 (🔍)
GCVE (CVE): GCVE-0-2011-1528
GCVE (VulDB): GCVE-100-59177

OVAL: 🔍

CERT: 🔍
X-Force: 70750
SecurityFocus: 50273 - MIT Kerberos Multiple Denial of Service Vulnerabilities
Vulnerability Center: 33677 - MIT Kerberos 5 KDC 1.8-1.8.4 and 1.9-1.91 \x27krb5_ldap_lockout_audit\x27 Remote DoS Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 08/04/2024 06:14
Changes: 03/23/2015 16:50 (64), 04/04/2017 11:32 (9), 11/24/2021 14:34 (5), 11/24/2021 14:38 (1), 08/04/2024 06:14 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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