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Incorrect Privilege Assignment Affecting systemd package, versions <242-4

Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-DEBIAN12-SYSTEMD-1560263
  • published 26 Apr 2019
  • disclosed 26 Apr 2019
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Introduced: 26 Apr 2019

CVE-2019-3843 Open this link in a new tab
CWE-266 Open this link in a new tab

How to fix?

Upgrade Debian:12 systemd to version 242-4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

References

CVSS Scores

version 3.1
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Snyk

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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NVD

7.8 high
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Red Hat

4.5 medium
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SUSE

4.5 medium