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Alerts This Week
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Gentoo: High Risk of Systemd Heap Exploit as of 202003-20 Update

gentoo
Calendar Grey March 15, 2020
Dist Gentoo Esm H88
A memory corruption flaw in systemd leads to a use-after-free vulnerability, enabling remote attackers to run arbitrary commands, posing risks for Gentoo users. Immediate updates are advised
A heap use-after-free flaw in systemd at worst might allow an attacker to execute arbitrary code.

Summary

It was found that systemd incorrectly handled certain Polkit queries.

Topics%20covered

Topics Covered

security advisory high severity gentoo arbitrary code heap exploit systemd flaw

Resolution

All systemd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/systemd-244.3"

References

[ 1 ] CVE-2020-1712 https://nvd.nist.gov/vuln/detail/CVE-2020-1712

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-20
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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: systemd: Heap use-after-free
Date: March 15, 2020
Bugs: #708806
ID: 202003-20

Topics%20covered

Topics Covered

security advisory high severity gentoo arbitrary code heap exploit systemd flaw

Synopsis

A heap use-after-free flaw in systemd at worst might allow an attacker to execute arbitrary code.

Background

A system and service manager.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/systemd < 244.3 >= 244.3

Impact

===== A local unprivileged user, by sending a specially crafted Polkit query, could possibly execute arbitrary code with the privileges of the process, escalate privileges or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

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