CVE-2018-6332 is a vulnerability in Facebook Hhvm
Published on December 3, 2018
A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests.
Vulnerability Analysis
CVE-2018-6332 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2018-6332 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2018-6332
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Affected Versions
Facebook HHVM:- Version 3.24.4 is affected.
- Version 3.22.0 and below unspecified is affected.
- Version 3.21.8 is affected.
- Version unspecified and below 3.21.8 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.