Out-of-bounds write in systemd - CVE-2017-9445
Published: June 27, 2017 / Updated: July 4, 2017
Vulnerability identifier: #VU7219
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2017-9445
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error when processing DNS responses in systemd-resolved. A remote unauthenticated attacker can send a specially crafted DNS response, trigger out-of-bounds write and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
systemd
Arch Linux
SUSE Linux
Ubuntu
Fedora
Arch Linux
SUSE Linux
Ubuntu
Fedora
How to mitigate CVE-2017-9445
The vulnerability is addressed in the following versions:
233-10.
233-10.
systemd - addressed in versions 229-22.fc24, 231-17.fc25, 233-6.fc26