Home / mailings [gentoo-announce] [ GLSA 201804-18 ] tenshi: Privilege escalation
Posted on 23 April 2018
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Gentoo Linux Security Advisory GLSA 201804-18
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https://security.gentoo.org/
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Severity: Normal
Title: tenshi: Privilege escalation
Date: April 22, 2018
Bugs: #626654
ID: 201804-18
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Synopsis
========
Gentoo's tenshi ebuild is vulnerable to privilege escalation due to the
way pid files are handled.
Background
==========
A log monitoring program, designed to watch one or more log files for
lines matching user defined regular expressions and report on the
matches.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/tenshi < 0.17 >= 0.17
Description
===========
It was discovered that the tenshi ebuild creates a tenshi.pid file
after dropping privileges to a non-root account.
Impact
======
A local attacker could escalate privileges to root or kill arbitrary
processes.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All tenshi users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/tenshi-0.17"
References
==========
[ 1 ] CVE-2017-11746
https://nvd.nist.gov/vuln/detail/CVE-2017-11746
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201804-18
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2018 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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