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Debian Security Advisory DSA-4428-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
April 08, 2019                        https://www.debian.org/security/faq
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Package        : systemd
CVE ID         : CVE-2019-3842

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.

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.

For the detailed security status of systemd please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/systemd

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Debian: DSA-4428-1: systemd security update

April 8, 2019
Jann Horn discovered that the PAM module in systemd insecurely uses the environment and lacks seat verification permitting spoofing an active session to PolicyKit

Summary

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.

For the detailed security status of systemd please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/systemd

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Severity
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.

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