CVE-2017-7656: XSS
Eclipse Jetty is vulnerable to HTTP request smuggling, caused by a flaw in the HTTP/1.x Parser. By sending a specially-crafted request, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
Other sources
In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), HTTP/0.9 is handled poorly. An HTTP/1 style request line (i.e. method space URI space version) that declares a version of HTTP/0.9 was accepted and treated as a 0.9 request. If deployed behind an intermediary that also accepted and passed through the 0.9 version (but did not act on it), then the response sent could be interpreted by the intermediary as HTTP/1 headers. This could be used to poison the cache if the server allowed the origin client to generate arbitrary content in the response.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2017-7656.
What is the severity of CVE-2017-7656?
The severity of CVE-2017-7656 is high with a severity value of 7.5.
How does CVE-2017-7656 affect Eclipse Jetty?
CVE-2017-7656 affects Eclipse Jetty versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled).
What is the risk of CVE-2017-7656?
CVE-2017-7656 poses a risk of HTTP request smuggling due to a flaw in the HTTP/1.x Parser.
How can I mitigate the CVE-2017-7656 vulnerability?
To mitigate the CVE-2017-7656 vulnerability, update to a version of Jetty that is not affected by the vulnerability.