CVE-2019-16770

mediumPriorität · verfolgen · 31EPSS 0.020 · 81. PerzentilDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.01% (81st) EPSS

CVSS 5 · medium

Is it mine?

6 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · bewertet 2026-10-27

In Puma before versions 3.12.2 and 4.3.1, a poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack. If more keepalive connections to Puma are opened than there are threads available, additional connections will wait permanently if the attacker sends requests frequently enough. This vulnerability is patched in Puma 4.3.1 and 3.12.2.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.aarch64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.ppc64le as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.s390x as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.x86_64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · security-advisories@github.comAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · SUSE Product Security

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-770USprimärCWE-770US

betroffene Produkte (6)

Betroffene Produkte und Versionsbereiche.

puma puma< 4.3.1 → 4.3.1enisa_euvdEU
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
puma puma3.0.0 → 3.12.2nvdUScpe:2.3:a:puma:puma:*:*:*:*:*:*:*:*
puma puma4.0.0 → 4.3.1nvdUScpe:2.3:a:puma:puma:*:*:*:*:*:*:*:*
RubyGems puma< 3.12.2osvUSpkg:gem/puma
RubyGems puma4.0.0 → 4.3.1osvUSpkg:gem/puma

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

openSUSE-SU-2026:10357-1ruby4.0-rubygem-puma-6.4.3-1.5 on GA media2026-03-13csaf · suse_csafDE
ruby4.0-rubygem-puma-6.4.3-1.5 on GA media
GHSA-7xx3-m584-x994A poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack2019-12-05ghsa · osvUS
## Keepalive thread overload/DoS ### Impact A poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack. If more keepalive connections to Puma are opened than there are threads available, additional connections will wait permanently if the attacker sends requests frequently enough. ### Patches This vulnerability is patched in Puma 4.3.1 and 3.12.2. ### Workarounds Reverse proxies in front of Puma could be configured to always allow less than X keepalive connections to a Puma cluster or process, where X is the number of threads configured in Puma's thread pool. ### For more information If you have any questions or comments about this advisory: * Open an issue at [puma](github.com/puma/puma).

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd nvd osv suse_csaf NVD CVE.org MITRE

veröffentlicht 2019-12-05geändert 2026-06-17

verwandt (3,270)

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+3265 weitere

Referenzen (19)

Externe Belege — Patches, Meldungen, Analysen.

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