CVE-2020-1938: Ghostcat - Apache Tomcat - AJP File Read/Inclusion Vulnerability
Apache · Apache Tomcat
Vendor fix available · Affected: Apache Tomcat · Exploitation: in CISA KEV since 3 Mar 2022
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
ExploitationIn CISA KEV
- In CISA KEVCISA KEV catalogue3 Mar 2022
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public: not seen
- Not established: not seen
Higher than 99% of scored CVEs
DescriptionCVE.org
When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Apache · Apache TomcatApache Tomcat 9.0.0.M1 to 9.0.0.30; 8.5.0 to 8.5.50; 7.0.0 to 7.0.99
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
- CISA KEV
- Listed since 3 Mar 2022 · catalogue entry
- Public check
- Ghostcat - Apache Tomcat - AJP File Read/Inclusion Vulnerability · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- Apache
- Published
- February 2020
What changed
- CISA added it to the KEV catalogue CISA
CoverageNo articles yet
No CyberSIXT article names CVE-2020-1938 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CISA KEV cataloguecisa.gov
- CVE recordcve.org
- Vendor advisorylists.opensuse.org
- Vendor advisorysecurity.gentoo.org
- Vendor advisorylists.fedoraproject.org
- Vendor advisorylists.fedoraproject.org
- Vendor advisorylists.fedoraproject.org
- Vendor advisorylists.opensuse.org
- Vendor advisorydebian.org
- Vendor advisorydebian.org
- Mailing listlists.apache.org
- Mailing listlists.apache.org
- Mailing listlists.apache.org
- Mailing listlists.apache.org
28 more references are in the CVE record.