#VU7391 Remote code execution in Apache Struts - CVE-2017-9791

Vulnerability identifier: #VU7391

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:A/U:Amber

CVE-ID: CVE-2017-9791

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerable software:
Apache Struts

Software vendor:
Apache Foundation

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to input validation error when using the Struts 2 Struts 1 plugin and it's a Struts 1 action. A remote attacker can send an error message in the ActionMessage class containing malicious field value and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may result in system compromise.

Follow vendor's recommendations to mitigate this vulnerability.

• http://struts.apache.org/docs/s2-048.html