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Sicherheit: Zwei Probleme in systemd
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in systemd
ID: USN-5013-1
Distribution: Ubuntu
Plattformen: Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 21.04
Datum: Di, 20. Juli 2021, 22:57
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33910
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13529
Applikationen: systemd

Originalnachricht

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
<ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <a8a7c055-16c0-7048-88a2-85867dc5db86@canonical.com>
Subject: [USN-5013-1] systemd vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-5013-1
July 20, 2021

systemd vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in systemd.

Software Description:
- systemd: system and service manager

Details:

It was discovered that systemd incorrectly handled certain mount paths. A
local attacker could possibly use this issue to cause systemd to crash,
resulting in a denial of service. (CVE-2021-33910)

Mitchell Frank discovered that systemd incorrectly handled DHCP FORCERENEW
packets. A remote attacker could possibly use this issue to reconfigure
servers. (CVE-2020-13529)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
systemd 247.3-3ubuntu3.4

Ubuntu 20.10:
systemd 246.6-1ubuntu1.7

Ubuntu 20.04 LTS:
systemd 245.4-4ubuntu3.10

Ubuntu 18.04 LTS:
systemd 237-3ubuntu10.49

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5013-1
CVE-2020-13529, CVE-2021-33910

Package Information:
https://launchpad.net/ubuntu/+source/systemd/247.3-3ubuntu3.4
https://launchpad.net/ubuntu/+source/systemd/246.6-1ubuntu1.7
https://launchpad.net/ubuntu/+source/systemd/245.4-4ubuntu3.10
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.49


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