Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mit | Kerberos 5 | 1.8 |
Related Weaknesses (CWE)
References
- http://kb.vmware.com/kb/1035108
- http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.h
- http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.h
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
- http://lists.vmware.com/pipermail/security-announce/2011/000133.html
- http://osvdb.org/69608
- http://secunia.com/advisories/42399Vendor Advisory
- http://support.apple.com/kb/HT4581
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txtVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:246
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.htmlPatchVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2010-0925.html
- http://www.securityfocus.com/archive/1/514953/100/0/threaded
FAQ
What is CVE-2010-4020?
CVE-2010-4020 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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, an...
How severe is CVE-2010-4020?
CVE-2010-4020 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2010-4020?
Check the references section above for vendor advisories and patch information. Affected products include: Mit Kerberos 5.