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Apache Struts - Remote Code Execution (CVE-2020-17530)

Severity
CVSSv3 Score
9.8
Vulnerability description

Apache Struts server is affected by a Remote Code Execution vulnerability, that an unauthenticated attacker can exploit to execute arbitrary commands on the target server. The root cause of this vulnerability consists in a forced double Object-Graph Navigation Language (OGNL) evaluation vulnerability on raw user-provided input, in tag attributes.

Risk description

The risk exists that a remote unauthenticated attacker can fully compromise the server in order to steal confidential information, install ransomware or pivot to the internal network.

Exploit capabilities

Sniper can gain unauthenticated Remote Code Execution on the target system and extract multiple artefacts as evidence.

Recommendation

Upgrade the Apache Struts server to 2.5.26 version or later.

Codename
Not available
Detectable with
Network Scanner
Exploitable with Sniper
Yes
Vuln date
Dec 2020
Published at
Updated at
Software Type
Web framework
Vendor
Apache
Product
Struts