CVE-2010-4020 Information

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

Reference

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.html http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html 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/42399 http://support.apple.com/kb/HT4581 http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt http://www.mandriva.com/security/advisories?name=MDVSA-2010:246 http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html http://www.redhat.com/support/errata/RHSA-2010-0925.html http://www.securityfocus.com/archive/1/514953/100/0/threaded http://www.securityfocus.com/archive/1/517739/100/0/threaded http://www.securityfocus.com/bid/45117 http://www.securitytracker.com/id?1024803 http://www.ubuntu.com/usn/USN-1030-1 http://www.vmware.com/security/advisories/VMSA-2011-0007.html http://www.vupen.com/english/advisories/2010/3094 http://www.vupen.com/english/advisories/2010/3095 http://www.vupen.com/english/advisories/2010/3118

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

6.3