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.

Remediation

References

CVE-2019-9900

Related Vulnerabilities

Serendipity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2011-4090)

ownCloud Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2014-9046)

MediaWiki Exposure of Resource to Wrong Sphere Vulnerability (CVE-2021-31548)

WordPress Plugin Splashing Images Multiple Vulnerabilities (2.1)

WordPress Plugin Email Verification for WooCommerce Unspecified Vulnerability (1.8.1)

Severity

High

Classification

CVE-2019-9900 CWE-20 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Tags

Missing Update Known Vulnerabilities