USN-5474-1: Varnish Cache vulnerabilities
It was dicovered that Varnish Cache did not clear a pointer between the
handling of one client request and the next request within the same connection.
A remote attacker could possibly use this issue to obtain sensitive
information. (CVE-2019-20637)
It was discovered that Varnish Cache could have an assertion failure when a
TLS termination proxy uses PROXY version 2. A remote attacker could possibly
use this issue to restart the daemon and cause a performance loss.
(CVE-2020-11653)
It was discovered that Varnish Cache allowed request smuggling and VCL
authorization bypass via a large Content-Length header for a POST
request. A remote attacker could possibly use this issue to obtain sensitive
information. (CVE-2021-36740)
It was discovered that Varnish Cache allowed request smuggling for HTTP/1
connections. A remote attacker could possibly use this issue to obtain
sensitive information. (CVE-2022-23959)
Source: USN-5474-1: Varnish Cache vulnerabilities
