CVEs-PoC/2010/CVE-2010-4020.md

CVE-2010-4020

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.

POC

Reference

• http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt
• http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
• http://www.redhat.com/support/errata/RHSA-2010-0925.html

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/blamhang/nopc