Home / mailings [gentoo-announce] [ GLSA 201710-07 ] OCaml: Privilege escalation
Posted on 08 October 2017
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Gentoo Linux Security Advisory GLSA 201710-07
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https://security.gentoo.org/
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Severity: High
Title: OCaml: Privilege escalation
Date: October 08, 2017
Bugs: #622544
ID: 201710-07
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Synopsis
========
A vulnerability in OCaml may allow local users to gain root privileges.
Background
==========
OCaml is a high-level, strongly-typed, functional, and object-oriented
programming language from the ML family of languages.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-lang/ocaml < 4.04.2 >= 4.04.2
Description
===========
A bad sanitization of environment variables: CAML_CPLUGINS,
CAML_NATIVE_CPLUGINS and CAML_BYTE_CPLUGINS in the OCaml compiler
allows the execution of raised privileges via external code.
Impact
======
A local attacker, by using specially crafted environment variables,
could possibly escalate privileges to the root group.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All OCaml users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/ocaml-4.04.2"
References
==========
[ 1 ] CVE-2017-9772
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-9772
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201710-07
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 2017 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.
http://creativecommons.org/licenses/by-sa/2.5
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