National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2010-4020 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.3 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L (V3.0 legend)
Impact Score: 3.4
Exploitability Score: 2.8


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): Low

CVSS v2.0 Severity and Metrics:

Base Score: 3.5 LOW
Vector: (AV:N/AC:M/Au:S/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.8


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
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://support.apple.com/kb/HT4581
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:246
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html Patch Vendor Advisory
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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:mit:kerberos:5-1.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.8.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.8.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:mit:kerberos:5-1.8.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2010-4020
NVD Published Date:
12/02/2010
NVD Last Modified:
10/10/2018