CVE-2010-4020: mit kerberos_5 Cryptographic Issues

Vulnerability summary

CVE-2010-4020 is a medium (CVSS 6.3) Cryptographic Issues vulnerability in mit kerberos_5. EPSS estimates a 1.92% chance of exploitation in the next 30 days, higher than 79.5% of scored vulnerabilities.

Timeline

1. 02-12-2010
   PublishedVulnerability first disclosed.
2. 07-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-310Cryptographic IssuesWeaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed.