CISA KEV · Known exploitedHigh

CVE-2017-12617

Apache Tomcat

When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default servlet to false) it was possible to upload a JSP file to the server via a specially crafted request. This JSP could then be requested and any code it contained would be executed by the server.

CVSS: 8.1
EPSS: 100.0%
CISA KEV: Listed
Published: 2017.10.04

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability100.0%

Technical severityCVSS 8.1

Vulnerability overview

Affected product and versions

Product: Apache Tomcat
Affected versions: 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46, 7.0.0 to 7.0.81, >= 7.0.0 < 7.0.82, >= 8.0 < 8.0.47, >= 8.5.0 < 8.5.23, >= 9.0.0 < 9.0.1, 12.04, 16.04, 17.10, 18.04, 9.3.3, 9.3.4, 9.3.5, 9.3.6, 10.0.1, 3.1.0, 3.2.0, 12.1.0.4.0
Fixed versions: 7.0.82, 8.0.47, 8.5.23, 9.0.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.04.15

1
Identify
Confirm that Apache Tomcat and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-434
KEV added: 2022.03.25
Ransomware use: 미확인