CVE-2019-9900
"Envoy HTTP Header Injection Vulnerability"
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.
INFO
Published Date :
April 25, 2019, 3:29 p.m.
Last Modified :
Nov. 7, 2023, 3:13 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.7
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2019-9900 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2019-9900
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-9900.
| URL | 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 | Exploit Mitigation Third Party Advisory |
| https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM | |
| https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
2019年天融信阿尔法实验室在微信公众号发布的所有安全资讯汇总
None
Makefile Go
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-9900 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-9900 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM [No types assigned] Removed Reference MITRE https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM -
Modified Analysis by [email protected]
Jan. 01, 2022
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L Changed Reference Type https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h No Types Assigned https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h Exploit, Mitigation, Third Party Advisory Removed CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:redhat:openshift_service_mesh:-:*:*:*:*:*:*:* -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-20 CWE-20 CWE-74 -
CVE Modified by [email protected]
Nov. 12, 2019
Action Type Old Value New Value Added Reference https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h [No Types Assigned] -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 MITRE AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L -
Initial Analysis by [email protected]
May. 01, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L Changed Reference Type https://access.redhat.com/errata/RHSA-2019:0741 No Types Assigned https://access.redhat.com/errata/RHSA-2019:0741 Third Party Advisory Changed Reference Type https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history No Types Assigned https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history Release Notes, Vendor Advisory Changed Reference Type https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM No Types Assigned https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM Third Party Advisory Changed Reference Type https://github.com/envoyproxy/envoy/issues/6434 No Types Assigned https://github.com/envoyproxy/envoy/issues/6434 Exploit, Issue Tracking, Third Party Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* versions up to (including) 1.9.0 -
CVE Modified by [email protected]
Apr. 25, 2019
Action Type Old Value New Value Added Reference https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2019:0741 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-9900 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-9900
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.49 }} 0.04%
score
0.76549
percentile