[gentoo-announce] [ GLSA 202107-03 ] libqb: Insecure temporary file

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Gentoo Linux Security Advisory GLSA 202107-03 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 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 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:
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 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.
creativecommons.org/licenses/by-sa/2.5