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CVE-2017-20148

Published: 20 September 2022

In the ebuild package through logcheck-1.3.23.ebuild for Logcheck on Gentoo, it is possible to achieve root privilege escalation from the logcheck user because of insecure recursive chown calls.

Notes

AuthorNote
sbeattie
issue in gentoo packaging, but the debian package postinst
also does a recursive chown that bears investigation.
mdeslaur
The scenario listed in the gentoo bug is mitigated by
fs.protected_hardlinks = 1, downgrading severity to low

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
logcheck
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needs-triage)
mantic Ignored
(end of life, was needs-triage)
noble Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H