CVE-2018-6335
moderate-risk
Published 2018-12-31
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.
Do I need to act?
-
0.69% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Vendors
References (4)
Vendor Advisory
https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html
Vendor Advisory
https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html
37
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
2/34 · Minimal
Exposure
9/34 · Low