Home / mailings [gentoo-announce] [ GLSA 202107-03 ] libqb: Insecure temporary file
Posted on 05 July 2021
Gentoo-announce- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202107-03
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: libqb: Insecure temporary file
Date: July 03, 2021
Bugs: #699860
ID: 202107-03
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
An insecure temporary file usage has been reported in libqb possibly
allowing local code execution.
Background
==========
libqb is a library with the primary purpose of providing
high-performance, reusable features for client-server architecture,
such as logging, tracing, inter-process communication (IPC), and
polling.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-cluster/libqb < 1.0.5 >= 1.0.5
Description
===========
It was discovered that libqb used predictable filenames (under /dev/shm
and /tmp) without O_EXCL.
Impact
======
A local attacker could perform symlink attacks to overwrite arbitrary
files with the privileges of the user running the application linked
against libqb.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libqb users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-cluster/libqb-1.0.5"
References
==========
[ 1 ] CVE-2019-12779
https://nvd.nist.gov/vuln/detail/CVE-2019-12779
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202107-03
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 2021 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
--F2rd1aFjWkduGA3K
Content-Type: application/pgp-signature; name="signature.asc"
