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Known exploited vulnerability

CVE-2017-12617

highCVSS 3.1 8.1In CISA KEVEPSS 100%Published · Apache Software Foundation

The short answer

CVE-2017-12617 affects Apache Software Foundation Apache Tomcat and is rated high (CVSS 8.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-03-25: attackers are using it, so patch it first. Fixed versions are published for tomcat-catalina (9.0.1, 8.5.23, 8.0.47) and tomcat-embed-core (9.0.1, 8.5.23, 8.0.47).

What it is

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.

Weakness: CWE-434.

Severity

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Mar 25, 2022

Federal due date Apr 15, 2022

EPSS, next 30 days

100%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected packages and fixed versions

PackageEcosystemFixed inAdvisory
org.apache.tomcat:tomcat-catalinaMaven9.0.1, 8.5.23, 8.0.47, 7.0.82GHSA-xjgh-84hx-56c5
org.apache.tomcat.embed:tomcat-embed-coreMaven9.0.1, 8.5.23, 8.0.47, 7.0.82GHSA-xjgh-84hx-56c5

Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.

Affected products

Apache Tomcat. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2017-12617 being exploited?

Yes. CISA added CVE-2017-12617 to its Known Exploited Vulnerabilities catalog on 2022-03-25, with a federal remediation due date of 2022-04-15.

How do I fix CVE-2017-12617?

Upgrade to a fixed version: org.apache.tomcat:tomcat-catalina (Maven) 9.0.1 or 8.5.23 or 8.0.47 or 7.0.82; org.apache.tomcat.embed:tomcat-embed-core (Maven) 9.0.1 or 8.5.23 or 8.0.47 or 7.0.82. CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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