CVE-2018-6332
MEDIUM
5.9
CVSS Score
Published: December 3, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 02:01 AM UTC
1 product affected across 1 vendorHHVM
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Severity
MEDIUM5.9
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://hhvm.com/blog/2018/03/15/hhvm-3.25.htmlSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.9MEDIUMCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400CWE-19
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