CVE-2013-4143

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.

2.1

CVSS

Severity: Low

CVSS 2.0 •

EPSS 0.06%

Vendor Advisory tux.org

Affected: n/a n/a

References

Link	Tags
http://www.tux.org/~bagleyd/xlock/xlockmore.README	vendor advisory
http://openwall.com/lists/oss-security/2013/07/18/6	mailing list
http://openwall.com/lists/oss-security/2013/07/16/8	mailing list

Frequently Asked Questions

What is the severity of CVE-2013-4143?: CVE-2013-4143 has been scored as a low severity vulnerability.
How to fix CVE-2013-4143?: To fix CVE-2013-4143, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4143 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2013-4143 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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