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Phusion Passenger incorrect permission assignment

Moderate severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

bundler passenger (RubyGems)

Affected versions

< 5.3.2

Patched versions

5.3.2

Description

An issue was discovered in switchGroup() in agent/ExecHelper/ExecHelperMain.cpp in Phusion Passenger before 5.3.2. The set of groups (gidset) is not set correctly, leaving it up to randomness (i.e., uninitialized memory) which supplementary groups are actually being set while lowering privileges.

References

Published by the National Vulnerability Database Jun 21, 2018
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jun 17, 2022
Last updated Jan 27, 2023

Severity

Moderate
5.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses

CVE ID

CVE-2018-12615

GHSA ID

GHSA-4284-jfhc-f854

Source code

Credits

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