MIT Kerberos up to 5.1.9 Key Distribution Center do_tgs_req.c process_tgs_req resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in MIT Kerberos up to 5.1.9 and classified as problematic. Affected by this issue is the function process_tgs_req of the file do_tgs_req.c of the component Key Distribution Center. Performing a manipulation results in resource management. This vulnerability was named CVE-2011-1530. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in MIT Kerberos up to 5.1.9 (Network Authentication Software). This affects the function process_tgs_req of the file do_tgs_req.c of the component Key Distribution Center. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

The process_tgs_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.2 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS request that triggers an error other than the KRB5_KDB_NOENTRY error.

The weakness was presented 12/08/2011 by Simo Sorce as not defined posting (Bugtraq). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2011-1530. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 69587 (Amazon Linux AMI : krb5 (ALAS-2011-28)), 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 119820 (Red Hat Update for krb5 (RHSA-2011:1790)).

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 Tenable (69587), SecurityFocus (BID 50929†), SecurityTracker (ID 1026374†) and Vulnerability Center (SBV-33989†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 69587
Nessus Name: Amazon Linux AMI : krb5 (ALAS-2011-28)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70591
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: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

03/29/2011 🔍
12/06/2011 +252 days 🔍
12/06/2011 +0 days 🔍
12/07/2011 +1 days 🔍
12/08/2011 +1 days 🔍
12/08/2011 +0 days 🔍
09/04/2013 +636 days 🔍
03/23/2015 +565 days 🔍
01/13/2025 +3584 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: RHSA-2011:1790⛔
Researcher: Simo Sorce
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1530 (🔍)
GCVE (CVE): GCVE-0-2011-1530
GCVE (VulDB): GCVE-100-59643

OVAL: 🔍

X-Force: 71655
SecurityFocus: 50929 - MIT Kerberos KDC TGS Handling NULL Pointer Dereference Denial Of Service Vulnerability
Secunia: 47124
SecurityTracker: 1026374
Vulnerability Center: 33989 - MIT Kerberos TGS Null Pointer Dereference Error Allows Remote DoS Vulnerability, High

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/13/2025 06:17
Changes: 03/23/2015 16:50 (62), 12/27/2018 11:20 (10), 11/28/2021 08:13 (6), 11/28/2021 08:18 (1), 11/28/2021 08:22 (1), 12/28/2024 14:24 (15), 01/13/2025 06:17 (8)
Complete: 🔍
Cache ID: 216:9B2:103

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