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Alerts This Week
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Gentoo: GLSA-202107-03 High: Libqb Local Code Execution Threat

gentoo
Calendar Grey July 3, 2021
Dist Gentoo Esm H88
Libqb faces a vulnerability related to improper handling of temporary files, enabling potential local execution; users are advised to upgrade.
An insecure temporary file usage has been reported in libqb possibly allowing local code execution.

Summary

It was discovered that libqb used predictable filenames (under /dev/shm and /tmp) without O_EXCL.

Topics%20covered

Topics Covered

security advisory high severity gentoo temporary file local execution insecure file libqb

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
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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.

Severity: High
Title: libqb: Insecure temporary file
Date: July 03, 2021
Bugs: #699860
ID: 202107-03

Topics%20covered

Topics Covered

security advisory high severity gentoo temporary file local execution insecure file libqb

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.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-cluster/libqb < 1.0.5 >= 1.0.5

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.

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