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

Drupal Core 8.5.x Multiple Vulnerabilities (8.5.0 - 8.5.14)

Envoy Proxy CVE-2019-18802 Vulnerability (CVE-2019-18802)

Seo Panel Server-Side Request Forgery (SSRF) Vulnerability (CVE-2024-22648)

Craft CMS Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2022-37248)

WordPress Plugin Frontend File Manager Multiple Vulnerabilities (21.2)

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