The Apache Software Foundation has patched a Tomcat HTTP/2 Request mix-up vulnerability CVE-2020-13943.
A cyber attacker could exploit this vulnerability to steal sensitive information.
“If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers – including HTTP/2 pseudo headers – from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources,” Apache stated in the security advisory.
To add, Apache recommends upgrading Apache Tomcat to the following versions:
- 10.0.0-M8 or later
- 9.0.38 or later
- 8.5.58 or later.
Organizations and users are strongly encouraged to upgrade to latest versions to address the vulnerability.