CVE-2018-6335

A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.

Score

CVSS 3.1 7.5 High

Status

Modified - cve-assign@fb.com

Published

2018-12-31

Last modified

2025-05-06

Weaknesses

CWE-20, CWE-400

Affected products

• Hhvm (Facebook)

References

• https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56
• https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html