Vulnerability Report

CVE-2019-9900

Title: Redhat Openshift Service Mesh Injection (SQLi/OSi)

Other

Proof Of Concept

No public PoC currently indexed for CVE-2019-9900.

CWE Category CWE-74
Published Date Apr 25, 2019
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 8.3 CVSS v3.1
Exploit Probability (EPSS)
3.73%

Vulnerability Summary

CVE-2019-9900: 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.

Impacted Vendors

E
enphase 1
R
redhat 1
E
envoyproxy 1

Reference Links

https://access.redhat.com/errata/RHSA-2019:0741 https://github.com/envoyproxy/envoy/issues/6434 https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history https://access.redhat.com/errata/RHSA-2019:0741 https://github.com/envoyproxy/envoy/issues/6434 https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS v3.0
Source Entity [email protected]
Severity MEDIUM
6.5
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2019-9900 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Affected Stack

No specific products linked.