Vulnerability Details : CVE-2019-16770
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.
Vulnerability category: Denial of service
Products affected by CVE-2019-16770
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
- cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-16770
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-16770
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2019-16770
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by:
- nvd@nist.gov (Secondary)
- security-advisories@github.com (Primary)
References for CVE-2019-16770
-
https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
[SECURITY] [DLA 3023-1] puma security updateMailing List;Third Party Advisory
-
https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994
Keepalive thread overload/DoS · Advisory · puma/puma · GitHubMitigation;Third Party Advisory
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