CVE-2019-3561 is a critical vulnerability affecting all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below). It stems from insufficient boundary checks in the strrpos and strripos functions, leading to out-of-bounds memory access. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity, allowing for potential complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating awareness and potential future interest.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.27.7CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 3.28.0, <= 3.30.4CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 4.0.0, <= 4.0.3CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
< 3.27.8CPE 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:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.