1. Home
  2. CVE Database
  3. CVE-2018-6335
HIGH · 7.5

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, ...

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
FacebookHhvm<= 3.21.10

Related Weaknesses (CWE)

CWE-20CWE-400

References

FAQ

What is CVE-2018-6335?

CVE-2018-6335 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, ...

How severe is CVE-2018-6335?

CVE-2018-6335 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-6335?

Check the references section above for vendor advisories and patch information. Affected products include: Facebook Hhvm.