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.

Category

6.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.53%
Vendor Advisory mandriva.com Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory apple.com Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory secunia.com Vendor Advisory mit.edu Vendor Advisory oracle.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.vupen.com/english/advisories/2010/3094 vdb entry
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html patch vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:246 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html vendor advisory
http://kb.vmware.com/kb/1035108
http://www.vupen.com/english/advisories/2010/3118 vdb entry
http://www.securityfocus.com/archive/1/514953/100/0/threaded mailing list
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html vendor advisory
http://www.vmware.com/security/advisories/VMSA-2011-0007.html
http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html vendor advisory
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt vendor advisory
http://www.vupen.com/english/advisories/2010/3095 vdb entry
http://secunia.com/advisories/42399 third party advisory vendor advisory
http://lists.vmware.com/pipermail/security-announce/2011/000133.html mailing list
http://www.securitytracker.com/id?1024803 vdb entry
http://www.securityfocus.com/archive/1/517739/100/0/threaded mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html vendor advisory
http://www.redhat.com/support/errata/RHSA-2010-0925.html vendor advisory
http://www.ubuntu.com/usn/USN-1030-1 vendor advisory
http://osvdb.org/69608 vdb entry
http://www.securityfocus.com/bid/45117 vdb entry
http://support.apple.com/kb/HT4581

Frequently Asked Questions

What is the severity of CVE-2010-4020?
CVE-2010-4020 has been scored as a medium severity vulnerability.
How to fix CVE-2010-4020?
To fix CVE-2010-4020, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-4020 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2010-4020 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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