CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.5	$0-$5k	0.00

A vulnerability was found in MIT Kerberos up to 5-1.10.2 (Network Authentication Software). It has been classified as very critical. This affects the function finish_process_as_req of the file src/kdc/do_as_req.c. The manipulation as part of a Eingabe leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

The weakness was released 07/31/2012 by Emmanuel Bouillon with NATO C3 Agency as MITKRB5-SA-2012-001 as not defined advisory (Website). The advisory is shared at web.mit.edu. This vulnerability is uniquely identified as CVE-2012-1015 since 02/07/2012. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/27/2021).

The vulnerability scanner Nessus provides a plugin with the ID 61970 (Mandriva Linux Security Advisory : krb5 (MDVSA-2012:120)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350633 (Amazon Linux Security Advisory for krb5: ALAS-2012-114).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (77318) and Tenable (61970). Entries connected to this vulnerability are available at 5902 and 60915.

Productinfo

Type

• Network Authentication Software

Vendor

• MIT

Name

• Kerberos

Version

• 5-1.8
• 5-1.8.1
• 5-1.8.2
• 5-1.8.3
• 5-1.8.4
• 5-1.8.5
• 5-1.8.6
• 5-1.9.4
• 5-1.10
• 5-1.10.1
• 5-1.10.2

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 61970
Nessus Name: Mandriva Linux Security Advisory : krb5 (MDVSA-2012:120)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 71495
OpenVAS Name: Debian Security Advisory DSA 2518-1 (krb5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/07/2012 🔍
06/08/2012 +122 days 🔍
07/31/2012 +53 days 🔍
07/31/2012 +0 days 🔍
07/31/2012 +0 days 🔍
08/01/2012 +1 days 🔍
08/01/2012 +0 days 🔍
08/06/2012 +5 days 🔍
08/10/2012 +4 days 🔍
08/21/2012 +11 days 🔍
09/06/2012 +16 days 🔍
03/27/2021 +3124 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: MITKRB5-SA-2012-001
Researcher: Emmanuel Bouillon
Organization: NATO C3 Agency
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-1015 (🔍)
OVAL: 🔍

X-Force: 77318
Vulnerability Center: 35945 - MIT Kerberos 5 Remote Arbitrary Code Execution or DoS Vulnerability via a Crafted AS-REQ Request, High
SecurityFocus: 54750 - MIT Kerberos 5 Uninitialized Pointer Dereference Remote Multiple Denial of Service Vulnerabilities
Secunia: 50041 - Kerberos KDC Two Memory Corruption Vulnerabilities, Highly Critical
OSVDB: 84423

See also: 🔍

Entryinfo

Created: 08/10/2012 11:32
Updated: 03/27/2021 09:09
Changes: 08/10/2012 11:32 (77), 04/16/2017 10:37 (11), 03/27/2021 09:09 (3)
Complete: 🔍

Discussion

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