CVE-2013-4143

high

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.

References

http://www.tux.org/~bagleyd/xlock/xlockmore.README

http://openwall.com/lists/oss-security/2013/07/18/6

http://openwall.com/lists/oss-security/2013/07/16/8

Details

Source: Mitre, NVD

Published: 2014-05-30

Updated: 2014-06-26

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High