#VU15555 Heap out-of-bounds write in systemd - CVE-2018-15688
Published: October 29, 2018 / Updated: March 28, 2023
Vulnerability identifier: #VU15555
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2018-15688
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
systemd
systemd
Software vendor:
Freedesktop.org
Freedesktop.org
Description
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.