CVE-2019-15226
CVSS V2 High 7.8
CVSS V3 High 7.5
Description
Upon 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.
Overview
- CVE ID
- CVE-2019-15226
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-10-09T16:15:14
- Last Modified Date
- 2019-10-17T17:03:07
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:envoyproxy:envoy:1.0.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.1.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.2.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.3.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.4.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.5.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.6.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.7.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.8.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.9.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.11.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.11.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:envoyproxy:envoy:1.11.2:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/envoyproxy/envoy/commits/master | Third Party Advisory |
| https://github.com/envoyproxy/envoy/issues/8520 | Third Party Advisory |
| https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014 | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-15226 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15226 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:01:23 | Added to TrackCVE | |||
| 2022-12-04 04:00:26 | 2019-10-09T16:15Z | 2019-10-09T16:15:14 | CVE Published Date | updated |
| 2022-12-04 04:00:26 | 2019-10-17T17:03:07 | CVE Modified Date | updated | |
| 2022-12-04 04:00:26 | Analyzed | Vulnerability Status | updated |