National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-9900 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.3 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Nist CVSS score does not match with CNA score
CNA:  MITRE
Base Score: 6.5 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://access.redhat.com/errata/RHSA-2019:0741 Third Party Advisory
https://github.com/envoyproxy/envoy/issues/6434 Exploit Issue Tracking Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h
https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM Third Party Advisory
https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history Release Notes Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.9.0


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9900
NVD Published Date:
04/25/2019
NVD Last Modified:
10/09/2019