MIT Kerberos 4.0/5 1.0/5 1.1.1 krb425_conv_principal memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in MIT Kerberos 4.0/5 1.0/5 1.1.1 and classified as critical. This vulnerability affects the function krb425_conv_principal. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2000-0390. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in MIT Kerberos 4.0/5 1.0/5 1.1.1 (Network Authentication Software) and classified as critical. This issue affects the function krb425_conv_principal. 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 confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in krb425_conv_principal function in Kerberos 5 allows remote attackers to gain root privileges.

The weakness was disclosed 05/16/2000 by Jeffrey I. Schiller and Jim Paris as confirmed advisory (CERT.org). The advisory is shared at cert.org. The identification of this vulnerability is CVE-2000-0390. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

Upgrading to version 4.1.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (4520), SecurityFocus (BID 1220†), OSVDB (4884†) and Vulnerability Center (SBV-23326†). The entries VDB-15556, VDB-15558 and VDB-15559 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

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: 🔍

Upgrade: Kerberos 4.1.0

Timelineinfo

05/16/2000 🔍
05/16/2000 +0 days 🔍
05/16/2000 +0 days 🔍
05/16/2000 +0 days 🔍
04/03/2004 +1418 days 🔍
08/31/2009 +1975 days 🔍
06/24/2014 +1758 days 🔍
04/21/2026 +4319 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: cert.org
Researcher: Jeffrey I. Schiller, Jim Paris
Status: Confirmed

CVE: CVE-2000-0390 (🔍)
GCVE (CVE): GCVE-0-2000-0390
GCVE (VulDB): GCVE-100-15557
X-Force: 4520
SecurityFocus: 1220 - Multiple Vendor Kerberos 5/Kerberos 4 Compatibility krb_rd_req() Buffer Overflow Vulnerability
OSVDB: 4884 - MIT Kerberos 5 krb425_conv_principal Function Remote Overflow
Vulnerability Center: 23326 - Multiple Kerberos 5 Vendors \x3E 1.2 Remote Root Privileges Escalation Vulnerability, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/24/2014 16:38
Updated: 04/21/2026 15:41
Changes: 06/24/2014 16:38 (58), 02/13/2017 10:32 (12), 04/21/2026 15:41 (15)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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