CVE-2017-12617highunder attackCWE-434

CVE-2017-12617

100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 8.1epss 100%

from disclosure to weapon2 days

Published on NVDOct 3

1st PoC+2d

metasploitOct 3

CISA KEV+1634d

exploitation probability

100%top 1% of all CVEs

observed exploitation

yesCISA + VulnCheck

31 public exploit(s)

What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Red HatVEX document ↗

Affected

2 products

Red Hat Enterprise Linux 5 · Red Hat JBoss Enterprise Application Platform 5

workaround: Ensure that readonly is set to true (the default) for the DefaultServlet, WebDAV servlet or application context. Block HTTP methods that permit resource modification for untrusted users.

Fixed

25 products (743 components)

Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server · Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 5 Server · Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 Server · Red Hat JBoss Enterprise Web Server 2 for RHEL 6 Server · Red Hat JBoss Enterprise Web Server 2 for RHEL 7 Server · and others 20

fix ↗

Not affected

6 products (10 components) — because the vulnerable code is not present in the product

Red Hat Software Collections · Red Hat JBoss Data Grid 6 · Red Hat JBoss Data Virtualization 6 · Red Hat JBoss Fuse 6 · Red Hat JBoss Operations Network 3 · and others 1

Action required by CISAfederal deadline: 2022-04-15

Apply updates per vendor instructions.

Researched and written with AI from the vendor advisory and public analysis, with the sources above. Always confirm the fixed version in the official advisory before acting.

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

Affected products

Apache Software Foundation · Apache Tomcat

public PoCs found — 31✓ VexDay Proof

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References