Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title systemd vulnerabilities
Informations
Name USN-4269-1 First vendor Publication 2020-02-05
Vendor Ubuntu Last vendor Modification 2020-02-05
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 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 PIDFile files. A local attacker could possibly use this issue to trick systemd into killing privileged processes. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-16888)

It was discovered that systemd incorrectly handled certain udevadm trigger commands. A local attacker could possibly use this issue to cause systemd to consume resources, leading to a denial of service. (CVE-2019-20386)

Jann Horn discovered that systemd incorrectly handled services that use the DynamicUser property. A local attacker could possibly use this issue to access resources owned by a different service in the future. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-3843, CVE-2019-3844)

Tavis Ormandy discovered that systemd incorrectly handled certain Polkit queries. A local attacker could use this issue to cause systemd to crash, resulting in a denial of service, or possibly execute arbitrary code and escalate privileges. (CVE-2020-1712)

Update instructions:

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

Ubuntu 19.10:
systemd 242-7ubuntu3.6

Ubuntu 18.04 LTS:
systemd 237-3ubuntu10.38

Ubuntu 16.04 LTS:
systemd 229-4ubuntu21.27

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

References:
https://usn.ubuntu.com/4269-1
CVE-2018-16888, CVE-2019-20386, CVE-2019-3843, CVE-2019-3844,
CVE-2020-1712

Package Information:
https://launchpad.net/ubuntu/+source/systemd/242-7ubuntu3.6
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.38
https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.27

Original Source

Url : http://www.ubuntu.com/usn/USN-4269-1

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-772 Missing Release of Resource after Effective Lifetime
33 % CWE-732 Incorrect Permission Assignment for Critical Resource (CWE/SANS Top 25)
33 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 18
Application 1
Application 1
Application 1
Application 1
Application 1
Os 3
Os 2
Os 1

Alert History

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0
Date Informations
2020-03-19 13:20:13
  • First insertion