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CVE-2013-4143

2.1 · LOW

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 implem…

Published May 30, 2014david_bagleyEPSS 0.40%

Overview

CVE-2013-4143 is a low-severity vulnerability affecting david_bagley xlockmore. It was published on May 30, 2014 and has a CVSS 2.0 base score of 2.1 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from david_bagley. Update xlockmore to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
david_bagleyxlockmore0Affected

References

Refopenwall.com/lists/oss-security/2013/07/16/8Refopenwall.com/lists/oss-security/2013/07/18/6Refwww.tux.org/~bagleyd/xlock/xlockmore.READMERefopenwall.com/lists/oss-security/2013/07/16/8Refopenwall.com/lists/oss-security/2013/07/18/6Refwww.tux.org/~bagleyd/xlock/xlockmore.README

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4143?

CVE-2013-4143 is a low-severity vulnerability affecting david_bagley xlockmore. It was published on May 30, 2014 and has a CVSS 2.0 base score of 2.1 (LOW).

How severe is CVE-2013-4143?

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-4143?

Check the references section for vendor advisories and patches from david_bagley. Update xlockmore to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-4143?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4143 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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