This security bulletin contains one high risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data passed via phar archives. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.Mitigation
The vulnerability exists due to inclusion of a third-party software Phar Stream Wrapper Interceptor into Drupal core.
Drupal: 7.0 - 7.66, 8.6.0 - 8.6.15, 8.7.0
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?