CVE-2013-4143

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-05-30 · updated 2026-06-16

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.

Affected products

David Bagley Xlockmore: through 5.42; 5.24, 5.25, 5.26, 5.27, 5.28, 5.29 (+12)

References

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
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

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