CVE-2018-6335

CVSS 7.5 HIGHEPSS 1.5%CWE-400

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 1.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Dec 2018Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

Affected products

Facebook · HHVM

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References

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