Input validation error in fscrypt - CVE-2018-6558
Published: August 23, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU36765
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-6558
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Google
Affected software:
fscrypt
fscrypt
Detailed vulnerability description
The vulnerability allows a remote authenticated user to manipulate data.
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).
How to mitigate CVE-2018-6558
Install update from vendor's website.