MIT Kerberos up to 5-1.12.1 RFC 1964 GSSAPI Token memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in MIT Kerberos. This affects an unknown part of the component RFC 1964 GSSAPI Token Handler. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2014-4342. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in MIT Kerberos (Network Authentication Software). It has been rated as problematic. Affected by this issue is an unknown function of the component RFC 1964 GSSAPI Token Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

MIT Kerberos 5 (aka krb5) 1.7.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (buffer over-read or NULL pointer dereference, and application crash) by injecting invalid tokens into a GSSAPI application session.

The weakness was released 06/20/2014 as Handle invalid RFC 1964 tokens as confirmed git commit (GIT Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2014-4342 since 06/20/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 78192 (F5 Networks BIG-IP : MIT Kerberos 5 vulnerability (K15547)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195579 (Ubuntu Security Notification for Krb5 Vulnerabilities (USN-2310-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16633.

The vulnerability is also documented in the databases at X-Force (94903), Tenable (78192), SecurityFocus (BID 68908†), Secunia (SA59102†) and Vulnerability Center (SBV-48237†). Entries connected to this vulnerability are available at VDB-7828, VDB-7884, VDB-8455 and VDB-67257. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78192
Nessus Name: F5 Networks BIG-IP : MIT Kerberos 5 vulnerability (K15547)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703000
OpenVAS Name: Debian Security Advisory DSA 3000-1 (krb5 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

06/20/2014 🔍
06/20/2014 +0 days 🔍
07/20/2014 +30 days 🔍
07/20/2014 +0 days 🔍
07/25/2014 +5 days 🔍
07/30/2014 +5 days 🔍
08/11/2014 +12 days 🔍
10/10/2014 +60 days 🔍
01/27/2015 +109 days 🔍
02/10/2022 +2571 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: Handle invalid RFC 1964 tokens
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-4342 (🔍)
GCVE (CVE): GCVE-0-2014-4342
GCVE (VulDB): GCVE-100-67256

OVAL: 🔍
IAVM: 🔍

X-Force: 94903 - MIT Kerberos GSSAPI denial of service, Medium Risk
SecurityFocus: 68908 - MIT Kerberos 5 GSSAPI Remote Denial of Service Vulnerability
Secunia: 59102 - Debian update for krb5, Moderately Critical
SecurityTracker: 1030706
Vulnerability Center: 48237 - MIT Kerberos 5 Remote Denial-of Service via Invalid Tokens Into a GSSAPI Application Session, High

See also: 🔍

Entryinfo

Created: 07/30/2014 11:12
Updated: 02/10/2022 02:12
Changes: 07/30/2014 11:12 (87), 06/18/2017 09:34 (4), 02/10/2022 02:04 (3), 02/10/2022 02:12 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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