MIT Kerberos 4.0/5 improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in MIT Kerberos 4.0/5 and classified as problematic. The impacted element is an unknown function. Such manipulation leads to improper authentication. This vulnerability is traded as CVE-1999-0143. There is no exploit available. This vulnerability is historically impactful due to its background and the reception it garnered. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in MIT Kerberos 4.0/5 (Network Authentication Software). It has been rated as problematic. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

kerberos 4 key servers allow a user to masquerade as another by breaking and generating session keys.

The weakness was shared 02/21/1996 by Mudge with @stake. This vulnerability is handled as CVE-1999-0143. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for 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 04/03/2025). This vulnerability has a historic impact due to its background and reception.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (64), SecurityFocus (BID 2351†) and Vulnerability Center (SBV-637†). Once again VulDB remains the best source for vulnerability data.

Affected

  • Sun Solaris 2.3/2.4

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/21/1996 🔍
02/21/1996 +0 days 🔍
02/21/1996 +0 days 🔍
11/22/1996 +275 days 🔍
01/05/2003 +2235 days 🔍
06/17/2014 +4181 days 🔍
04/03/2025 +3943 days 🔍

Sourcesinfo

Vendor: mit.edu

Researcher: Mudge
Organization: @stake
Status: Confirmed

CVE: CVE-1999-0143 (🔍)
GCVE (CVE): GCVE-0-1999-0143
GCVE (VulDB): GCVE-100-13724
X-Force: 64
SecurityFocus: 2351 - Kerberos 4 Valid Username and Realm Disclosure Vulnerability
Vulnerability Center: 637 - Kerberos 4 key servers allow a user to masquerade as another, Low

Entryinfo

Created: 06/17/2014 16:51
Updated: 04/03/2025 12:42
Changes: 06/17/2014 16:51 (55), 05/08/2019 00:09 (4), 04/03/2025 12:42 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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