CVE-2018-6335 describes a denial-of-service vulnerability in HHVM versions 3.25.2, 3.24.6, and 3.21.10 and below, specifically when the proxygen server handles HTTP/2 requests. A malformed HTTP/2 frame can trigger a 'std::out_of_range' exception during priority metadata parsing, leading to service disruption. This vulnerability carries a CVSS v3 score of 7.5 (HIGH), indicating it can be exploited remotely with low complexity and no user interaction, resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.21.10CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
3.24.6CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:3.24.6:*:*:*:*:*:*:* | ||
3.25.2CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:3.25.2:*:*:*:*:*:*:* | ||
< 3.21.11CPE match | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.