high8.3
CVE-2019-9900
When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0).
Impact
When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Envoyproxy | Envoy | through 1.9.0 |
| Redhat | Openshift Service Mesh | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/errata/RHSA-2019:0741
- https://github.com/envoyproxy/envoy/issues/6434
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h
- https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM
- https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history
- https://access.redhat.com/errata/RHSA-2019:0741
- https://github.com/envoyproxy/envoy/issues/6434
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h
- https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM
- https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history