CVE-2019-16770 describes a Denial of Service (DoS) vulnerability in Puma web server versions prior to 3.12.2 and 4.3.1, affecting Debian and Puma products. A remote, unauthenticated attacker can exploit this by monopolizing Puma's reactor with excessive keepalive requests, causing new connections to permanently wait. Rated High severity (CVSS 7.5), this vulnerability has a low attack complexity and can lead to a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.0.0, < 3.12.2CPE matchmatch criteria | cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* | ||
>= 4.0.0, < 4.3.1CPE matchmatch criteria | cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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