MIT Kerberos 4.0/5 1.0/5 1.1.1 krb425_conv_principal memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.0 | $0-$5k | 0.00 |
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 vulnerability database at X-Force (4520). The entries 15556, 15558 and 15559 are pretty similar.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 10.0VulDB Meta Temp Score: 9.0
VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kerberos 4.1.0
Timeline
05/16/2000 🔍05/16/2000 🔍
05/16/2000 🔍
05/16/2000 🔍
04/03/2004 🔍
08/31/2009 🔍
06/24/2014 🔍
02/13/2017 🔍
Sources
Vendor: mit.eduAdvisory: cert.org
Researcher: Jeffrey I. Schiller, Jim Paris
Status: Confirmed
CVE: CVE-2000-0390 (🔍)
X-Force: 4520
Vulnerability Center: 23326 - Multiple Kerberos 5 Vendors \x3E 1.2 Remote Root Privileges Escalation Vulnerability, Critical
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
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 06/24/2014 16:38Updated: 02/13/2017 10:32
Changes: 06/24/2014 16:38 (58), 02/13/2017 10:32 (12)
Complete: 🔍
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