CVE-2018-6558

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).

6.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.22%

Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory launchpad.net

Affected: The fscrypt Project fscrypt

References

Link	Tags
https://github.com/google/fscrypt/issues/77	third party advisory issue tracking
https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b	third party advisory patch
https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66	third party advisory patch
https://launchpad.net/bugs/1787548	patch third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2018-6558?: CVE-2018-6558 has been scored as a medium severity vulnerability.
How to fix CVE-2018-6558?: To fix CVE-2018-6558, 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-2018-6558 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-6558 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.
What software or system is affected by CVE-2018-6558?: CVE-2018-6558 affects The fscrypt Project fscrypt.

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