MIT Kerberos 5-1.9 Key Distribution Center null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability classified as problematic was found in MIT Kerberos 5-1.9 (Network Authentication Software). This vulnerability affects some unknown processing of the component Key Distribution Center. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed request packet that does not trigger a response packet.

The weakness was published 02/10/2011 with Red Hat (Website). The advisory is shared for download at vupen.com. This vulnerability was named CVE-2011-0283. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/16/2021).

The vulnerability scanner Nessus provides a plugin with the ID 53418 (CentOS 5 : krb5 (CESA-2011:0199)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11400.

The vulnerability is also documented in the vulnerability database at Tenable (53418). Similar entry is available at 56439.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

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

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

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 53418
Nessus Name: CentOS 5 : krb5 (CESA-2011:0199)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 69597
OpenVAS Name: FreeBSD Ports: krb5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

01/03/2011 🔍
02/08/2011 +36 days 🔍
02/08/2011 +0 days 🔍
02/10/2011 +2 days 🔍
02/10/2011 +0 days 🔍
02/21/2011 +11 days 🔍
03/20/2015 +1488 days 🔍
10/16/2021 +2402 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: RHSA-2011:0199⛔
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0283 (🔍)
Vulnerability Center: 29871 - MIT Kerberos 5 1.9 Remote DoS Vulnerability via a Malformed Request Packet, High
SecurityFocus: 46272 - MIT Kerberos KDC Request NULL Pointer Denial Of Service Vulnerability
Secunia: 43260

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/16/2021 17:25
Changes: 03/20/2015 16:16 (60), 03/16/2017 15:30 (9), 10/16/2021 17:17 (5), 10/16/2021 17:25 (2)
Complete: 🔍

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