National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-4143 Detail

Description

The (1) checkPasswd and (2) checkGroupXlockPasswds functions in xlockmore before 5.43 do not properly handle when a NULL value is returned upon an error by the crypt or dispcrypt function as implemented in glibc 2.17 and later, which allows attackers to bypass the screen lock via vectors related to invalid salts.

Source:  MITRE
Description Last Modified:  05/30/2014

Evaluator Description

per http://cwe.mitre.org/data/definitions/476.html "CWE-476: NULL Pointer Dereference"

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2013/07/16/8
http://openwall.com/lists/oss-security/2013/07/18/6
http://www.tux.org/~bagleyd/xlock/xlockmore.README Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:david_bagley:xlockmore:5.24:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.25:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.26:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.27:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.28:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.29:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.30:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.31:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.32:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.33:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.34:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.35:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.36:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.37:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.38:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.39:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.40:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:5.41:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:david_bagley:xlockmore:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
5.42


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-4143
NVD Published Date:
05/30/2014
NVD Last Modified:
06/26/2014