Medium severity · published Dec 2, 2010
CVE-2010-4020
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)…
6.3
CVSS
1.9%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
K5
Kerberos 5 · Mit
1.8; 1.8.1; 1.8.2; 1.8.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2010-4020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2010-4020
kb.vmware.com
http://kb.vmware.com/kb/1035108
lists.apple.com
http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
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