CVE-2019-9900
CVSS V2 High 7.5
CVSS V3 High 8.3
Description
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.
Overview
- CVE ID
- CVE-2019-9900
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-04-25T15:29:01
- Last Modified Date
- 2022-01-01T20:16:55
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.9.0 | |
| cpe:2.3:a:redhat:openshift_service_mesh:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- LOW
- Base Score
- 8.3
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.7
References
| Reference URL | Reference Tags |
|---|---|
| https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history | Release Notes Vendor Advisory |
| https://github.com/envoyproxy/envoy/issues/6434 | Exploit Issue Tracking Third Party Advisory |
| https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:0741 | Third Party Advisory |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h | Exploit Mitigation Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-9900 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9900 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:39:24 | Added to TrackCVE | |||
| 2022-12-03 20:05:14 | 2019-04-25T15:29Z | 2019-04-25T15:29:01 | CVE Published Date | updated |
| 2022-12-03 20:05:14 | 2022-01-01T20:16:55 | CVE Modified Date | updated | |
| 2022-12-03 20:05:14 | Analyzed | Vulnerability Status | updated |