CVE-2018-6558 — Vulnetix

CVE-2018-6558 PUBLISHED

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).

EPSS 0.14% · 34.5th percentile

Risk Scores

EPSS Score

0.14%

34.5th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:18.04:LTS	fscrypt	0, 0.2.2-0ubuntu2

Exploit Intelligence

https://github.com/google/fscrypt/issues/77 (circl)
https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b (circl)
https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66 (circl)
https://launchpad.net/bugs/1787548 (circl)

Timeline

Aug 23, 2018 CVE Published
Apr 14, 2021 EPSS Score
Jun 23, 2021 EPSS Score
Aug 24, 2021 EPSS Score
Oct 26, 2021 EPSS Score
Dec 27, 2021 EPSS Score
Feb 4, 2022 EPSS Score
Feb 28, 2022 EPSS Score
May 2, 2022 EPSS Score
Sep 5, 2022 EPSS Score
Nov 6, 2022 EPSS Score
Jan 8, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2018-6558 third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2018-6558 third-party-advisory

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