VDB
CVE-2019-9901
CVE-2019-9901
PUBLISHED
CVSS 6.5 MEDIUM
Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.
EPSS 4.95% · 92.1th percentile
Risk Scores
CVSS 3.0
6.5
CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N
EPSS Score
4.95%
92.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| envoyproxy | envoy | 0 |
| github.com | envoyproxy/envoy | 0 |
| n/a | n/a | n/a |
Timeline
- Apr 25, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 2, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jul 6, 2022 EPSS Score
- Sep 8, 2022 EPSS Score
- Nov 10, 2022 EPSS Score
References
- https://github.com/envoyproxy/envoy/issues/6435 discussion
- https://github.com/envoyproxy/envoy/commit/e668e669677e52a00d99652b5a260d1cedafdfa8 fix
- https://github.com/envoyproxy/envoy/blob/main/security/postmortems/cve-2019-9900.md exploit
- https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history url
- https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM url
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w url
- https://nvd.nist.gov/vuln/detail/CVE-2019-9901 advisory
- https://github.com/envoyproxy/envoy package
- https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM url