MIT Kerberos 5-1.7 Key Distribution Center prep_reprocess_req null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in MIT Kerberos 5-1.7. It has been classified as problematic. This vulnerability affects the function prep_reprocess_req of the component Key Distribution Center. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2009-3295. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MIT Kerberos 5-1.7 (Network Authentication Software). This issue affects the function prep_reprocess_req of the component Key Distribution Center. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

The prep_reprocess_req function in kdc/do_tgs_req.c in the cross-realm referral implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 before 1.7.1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a ticket request.

The weakness was shared 12/29/2009 by jorgen (Website). The advisory is shared at vupen.com. The identification of this vulnerability is CVE-2009-3295 since 09/22/2009. 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.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 44880 (Fedora 12 : krb5-1.7-15.fc12 (2009-13539)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165583 (SUSE Enterprise Linux Security Update krb5 (SUSE-SA:2010:006)).

Upgrading to version 5-1.7 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (44880), SecurityFocus (BID 37486†), Secunia (SA37977†), SecurityTracker (ID 1023392†) and Vulnerability Center (SBV-24510†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 44880
Nessus Name: Fedora 12 : krb5-1.7-15.fc12 (2009-13539)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 861606
OpenVAS Name: Fedora Update for krb5 FEDORA-2009-13539
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kerberos 5-1.7
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/22/2009 🔍
12/28/2009 +97 days 🔍
12/29/2009 +1 days 🔍
12/29/2009 +0 days 🔍
12/29/2009 +0 days 🔍
12/29/2009 +0 days 🔍
12/29/2009 +0 days 🔍
01/04/2010 +6 days 🔍
02/25/2010 +52 days 🔍
03/18/2015 +1847 days 🔍
08/30/2021 +2357 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: vupen.com⛔
Researcher: jorgen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-3295 (🔍)
GCVE (CVE): GCVE-0-2009-3295
GCVE (VulDB): GCVE-100-51329

OVAL: 🔍

SecurityFocus: 37486 - MIT Kerberos KDC Cross-Realm Referral NULL Pointer Dereference Denial Of Service Vulnerability
Secunia: 37977 - Kerberos KDC Two Vulnerabilities, Less Critical
SecurityTracker: 1023392 - Kerberos KDC Null Pointer Dereference in Cross-Realm Referral Processing Lets Remote Authenticated Users Deny Service
Vulnerability Center: 24510 - MIT Kerberos 5 1.7 Remote Dos Vulnerability via Ticket Request, High
Vupen: ADV-2009-3652

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/30/2021 11:31
Changes: 03/18/2015 15:15 (68), 02/19/2017 09:42 (19), 08/30/2021 11:31 (3)
Complete: 🔍
Cache ID: 216::103

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

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