CVE-2018-6558
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
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Description
The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with the root user, which allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM (aka pam).
Predictions
Exploit likelihood
30%
Patch ETA
—
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 withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.2.4-1 |
| sid | Fixed | 0.2.4-1 |
| forky | Fixed | 0.2.4-1 |
| bullseye | Fixed | 0.2.4-1 |
| bookworm | Fixed | 0.2.4-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/google/fscrypt | <0.2.4 | 0.2.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-6558
- https://github.com/google/fscrypt/issues/77
- https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b
- https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66
- https://github.com/google/fscrypt
- https://launchpad.net/bugs/1787548
- https://pkg.go.dev/vuln/GO-2020-0027
- https://security-tracker.debian.org/tracker/CVE-2018-6558
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.