SB2018111107 - OpenSUSE Linux update for systemd

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Main Vulnerability Database SB2018111107

SB2018111107 - OpenSUSE Linux update for systemd

Published: November 11, 2018 Updated: March 28, 2023

Security Bulletin ID SB2018111107
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Privilege escalation (CVE-ID: CVE-2018-15686)

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The weakness exists due to an error in unit_deserialize of systemd. A remote attacker can supply arbitrary state across systemd re-execution via NotifyAccess and gain root privileges.


2) Heap out-of-bounds write (CVE-ID: CVE-2018-15688)

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code with elevated privileges.

The weakness exists within the written-from-scratch DHCPv6 client of the open-source Systemd management suite due to an out-of-bounds heap write in the DHCPv6 client when handling options sent by network adjacent DHCP servers. A remote attacker can supply maliciously crafted DHCPv6 packets, exploit the programming cockup, arbitrarily change parts of memory to crash or execute arbitrary code on the vulnerable Systemd-powered Linux machines.


Remediation

Install update from vendor's website.

References