Executive Summary

Summary
Title systemd vulnerabilities
Informations
Name USN-3816-1 First vendor Publication 2018-11-12
Vendor Ubuntu Last vendor Modification 2018-11-12
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:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in systemd.

Software Description: - systemd: system and service manager

Details:

Jann Horn discovered that unit_deserialize incorrectly handled status messages above a certain length. A local attacker could potentially exploit this via NotifyAccess to inject arbitrary state across re-execution and obtain root privileges. (CVE-2018-15686)

Jann Horn discovered a race condition in chown_one(). A local attacker could potentially exploit this by setting arbitrary permissions on certain files to obtain root privileges. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-15687)

It was discovered that systemd-tmpfiles mishandled symlinks in non-terminal path components. A local attacker could potentially exploit this by gaining ownership of certain files to obtain root privileges. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-6954)

Update instructions:

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

Ubuntu 18.10:
systemd 239-7ubuntu10.3

Ubuntu 18.04 LTS:
systemd 237-3ubuntu10.6

Ubuntu 16.04 LTS:
systemd 229-4ubuntu21.8

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

References:
https://usn.ubuntu.com/usn/usn-3816-1
CVE-2018-15686, CVE-2018-15687, CVE-2018-6954

Package Information:
https://launchpad.net/ubuntu/+source/systemd/239-7ubuntu10.3
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.6
https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.8

Original Source

Url : http://www.ubuntu.com/usn/USN-3816-1

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-502 Deserialization of Untrusted Data
33 % CWE-362 Race Condition
33 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 55
Os 4
Os 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-24bd6c9d4a.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-c402eea18b.nasl - Type : ACT_GATHER_INFO
2018-11-20 Name : The remote Debian host is missing a security update.
File : debian_DLA-1580.nasl - Type : ACT_GATHER_INFO
2018-10-31 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201810-10.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2018-12-10 21:21:42
  • Multiple Updates
2018-11-20 17:21:26
  • Multiple Updates
2018-11-12 21:19:08
  • First insertion