CVE-2013-4143

low

Published 2014-05-30 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.1

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
david_bagley	xlockmore	`{"endIncluding":"5.42"}`
david_bagley	xlockmore	`5.24`
david_bagley	xlockmore	`5.25`
david_bagley	xlockmore	`5.26`
david_bagley	xlockmore	`5.27`
david_bagley	xlockmore	`5.28`
david_bagley	xlockmore	`5.29`
david_bagley	xlockmore	`5.30`
david_bagley	xlockmore	`5.31`
david_bagley	xlockmore	`5.32`
david_bagley	xlockmore	`5.33`
david_bagley	xlockmore	`5.34`
david_bagley	xlockmore	`5.35`
david_bagley	xlockmore	`5.36`
david_bagley	xlockmore	`5.37`
david_bagley	xlockmore	`5.38`
david_bagley	xlockmore	`5.39`
david_bagley	xlockmore	`5.40`
david_bagley	xlockmore	`5.41`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.