GHSA-4284-jfhc-f854

ghsaUSosv

Phusion Passenger incorrect permission assignment

view advisory published 2022-05-13Licence: CC-BY-4.0

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2018-12615US	medium5.3	1.20% (68th)	—	2018-06-21
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…

references

External citations — patches, advisories, analysis.

https://github.com/phusion/passengerPACKAGE
https://github.com/phusion/passenger/commit/4e97fdb86d0a0141ec9a052c6e691fcd07bb45c8WEB
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12615.ymlWEB
https://nvd.nist.gov/vuln/detail/CVE-2018-12615ADVISORY

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