Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Puma | Puma | >= 3.0.0, < 3.12.2 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994MitigationThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00034.htmlMailing ListThird Party Advisory
- https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994MitigationThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00034.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2019-16770?
CVE-2019-16770 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...
How severe is CVE-2019-16770?
CVE-2019-16770 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-16770?
Check the references section above for vendor advisories and patch information. Affected products include: Puma Puma, Debian Debian Linux.