CVE-2017-12615 on CISA KEV

When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default 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 a

01What CISA says about this vulnerability

When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default 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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• access.redhat.com — https://access.redhat.com/errata/RHSA-2017:3113
• access.redhat.com — https://access.redhat.com/errata/RHSA-2017:3080
• www.securitytracker.com — http://www.securitytracker.com/id/1039392
• lists.apache.org — https://lists.apache.org/thread.html/8fcb1e2d5895413abcf266f011b9918ae03e0b7dace…
• www.synology.com — https://www.synology.com/support/security/Synology_SA_17_54_Tomcat
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:0465
• breaktoprotect.blogspot.com — http://breaktoprotect.blogspot.com/2017/09/the-case-of-cve-2017-12615-tomcat-7-p…
• access.redhat.com — https://access.redhat.com/errata/RHSA-2017:3114
• www.securityfocus.com — http://www.securityfocus.com/bid/100901
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:0466
• www.exploit-db.com — https://www.exploit-db.com/exploits/42953/
• security.netapp.com — https://security.netapp.com/advisory/ntap-20171018-0001/
• github.com — https://github.com/breaktoprotect/CVE-2017-12615
• access.redhat.com — https://access.redhat.com/errata/RHSA-2017:3081
• lists.apache.org — https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c…
• lists.apache.org — https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85…
• lists.apache.org — https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f9…
• lists.apache.org — https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0…
• lists.apache.org — https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a148555…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Apache Software Foundation	Apache Tomcat	7.0.0 to 7.0.79

06Detection

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