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Debian Security Advisory DSA 4428-1 (systemd - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'systemd' package(s) announced via the DSA-4428-1 advisory.
Insight
Insight
Jann Horn discovered that the PAM module in systemd insecurely uses the environment and lacks seat verification permitting spoofing an active session to PolicyKit. A remote attacker with SSH access can take advantage of this issue to gain PolicyKit privileges that are normally only granted to clients in an active session on the local console.
Affected Software
Affected Software
'systemd' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For the stable distribution (stretch), this problem has been fixed in version 232-25+deb9u11. This update includes updates previously scheduled to be released in the stretch 9.9 point release. We recommend that you upgrade your systemd packages.