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CVE-2018-6335

HIGH

7.5

Description

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/31/2018

Last Modified5/6/2025

Sourcenvd

Honeypot Sightings0

Affected Products

facebook:hhvm

Weaknesses (CWE)

CWE-400CWE-20

References

https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56(cve-assign@fb.com)

https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html(cve-assign@fb.com)

https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56(af854a3a-2127-422b-91ae-364da2661108)

https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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