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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-7656 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-java-common-jetty | Affected |
| Red Hat Satellite 5 | nutch | Will not fix |
| Red Hat JBoss Fuse Service Works 6 | jetty | Will not fix |
| Red Hat JBoss Fuse 7 | jetty | Affected |
| Red Hat JBoss Fuse 6 | jetty | Will not fix |
| Red Hat Enterprise Linux 7 | jetty | Affected |
| Red Hat Enterprise Linux 6 | jetty-eclipse | Will not fix |
Vulmon