CVE-2018-6335 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00695.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Facebook	Hhvm

Configuration 1 [-]

OR	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm:3.24.6:::::::*
	cpe:2.3:a:facebook:hhvm:3.25.2:::::::*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2018-18095	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.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Tue, 06 May 2025 19:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: facebook

Published: 2018-12-31T20:00:00.000Z

Updated: 2025-05-06T19:02:13.156Z

Reserved: 2018-01-26T00:00:00.000Z

Link: CVE-2018-6335

Vulnrichment

Updated: 2024-08-05T06:01:48.923Z

NVD

Status : Modified

Published: 2018-12-31T19:29:00.417

Modified: 2025-05-06T19:15:53.723

Link: CVE-2018-6335

Redhat

No data.

OpenCVE Enrichment

No data.

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