CVE-2019-15226
high · 7.5Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-service attack.
7.5
CVSS
65.4%
EPSS (exploit prob.)
99th
EPSS percentile
2019-10-09
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| envoyproxy | envoy | 1.0.0 |
| envoyproxy | envoy | 1.1.0 |
| envoyproxy | envoy | 1.2.0 |
| envoyproxy | envoy | 1.3.0 |
| envoyproxy | envoy | 1.4.0 |
| envoyproxy | envoy | 1.5.0 |
| envoyproxy | envoy | 1.6.0 |
| envoyproxy | envoy | 1.7.0 |
| envoyproxy | envoy | 1.7.1 |
| envoyproxy | envoy | 1.8.0 |
| envoyproxy | envoy | 1.9.0 |
| envoyproxy | envoy | 1.9.1 |
| envoyproxy | envoy | 1.10.0 |
| envoyproxy | envoy | 1.11.0 |
| envoyproxy | envoy | 1.11.1 |
| envoyproxy | envoy | 1.11.2 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014
- https://github.com/envoyproxy/envoy/commits/master
- https://github.com/envoyproxy/envoy/issues/8520
- https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014
- https://github.com/envoyproxy/envoy/commits/master
- https://github.com/envoyproxy/envoy/issues/8520
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2019-15226