MIT Kerberos 5-1.8/5-1.8.1/5-1.8.2/5-1.8.3 cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

A vulnerability, which was classified as critical, has been found in MIT Kerberos 5-1.8/5-1.8.1/5-1.8.2/5-1.8.3 (Network Authentication Software). This issue affects an unknown functionality. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is integrity. The summary by CVE is:

MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.

The weakness was published 11/30/2010 by Sam Hartman (Website). It is possible to read the advisory at vupen.com. The identification of this vulnerability is CVE-2010-4020 since 10/20/2010. The attack may be initiated remotely. The successful exploitation needs a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 51102 (FreeBSD : krb5 -- RFC 3961 key-derivation checksum handling vulnerability (1d193bba-03f6-11e0-bf50-001a926c7637)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216007 (VMWare ESXi 4.1.0 Patch Release ESXi410-201104001 Missing (KB1035111)).

A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (51102). Similar entries are available at 55596, 55591, 55590 and 57340.

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: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 51102
Nessus Name: FreeBSD : krb5 -- RFC 3961 key-derivation checksum handling vulnerability (1d193bba-03f6-11e0-bf50-001a926c7637)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 68692
OpenVAS Name: FreeBSD Ports: krb5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

10/20/2010 🔍
11/30/2010 +41 days 🔍
11/30/2010 +0 days 🔍
11/30/2010 +0 days 🔍
11/30/2010 +0 days 🔍
12/01/2010 +1 days 🔍
12/02/2010 +1 days 🔍
12/05/2010 +3 days 🔍
12/10/2010 +4 days 🔍
03/19/2015 +1560 days 🔍
07/14/2015 +117 days 🔍
07/20/2015 +6 days 🔍
10/06/2021 +2270 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: USN-1030-1⛔
Researcher: Sam Hartman
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-4020 (🔍)
OVAL: 🔍
IAVM: 🔍

SecurityTracker: 1024803 - MIT Kerberos Checksum Handling Errors May Let Remote or Remote Authenticated Users Forge/Modify Certain Data
Vulnerability Center: 51436 - MIT Kerberos 5 1.8-1.8.3 Allows Remote Attackers to Forge Signatures or Gain Privileges, Medium
SecurityFocus: 45117 - MIT Kerberos Checksum AD-SIGNEDPATH and AD-KDC-ISSUED Security Bypass Vulnerability
Secunia: 42399 - Red Hat update for krb5, Moderately Critical
OSVDB: 69608 - MIT Kerberos 5 (krb5) RC4 Key-derivation Checksums One-byte Stream-cipher Operation Signature Forgery Issue
Vupen: ADV-2010-3094

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 10/06/2021 03:04
Changes: 03/19/2015 14:37 (69), 07/14/2017 08:54 (20), 10/06/2021 02:49 (3), 10/06/2021 02:56 (12), 10/06/2021 03:04 (1)
Complete: 🔍

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