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CVE-2019-16770— Potential DOS attack in Puma

Quick assessment

Affected
puma puma
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Puma是一款针对高并发应用的Web服务器。 Puma 3.12.2之前版本和4.3.2之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。

CVSS 5.3 · Medium EPSS 2.01% · P79
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I. Basic Information for CVE-2019-16770

Vulnerability Information
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Vulnerability Title
Potential DOS attack in Puma
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Puma 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Puma是一款针对高并发应用的Web服务器。 Puma 3.12.2之前版本和4.3.2之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
puma puma < 4.3.1 ~ 4.3.1 -

II. Public POCs for CVE-2019-16770

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III. Intelligence Information for CVE-2019-16770

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Vendor Advisories for CVE-2019-16770 (1)

IV. Related Vulnerabilities

Same product: puma
Same vendor: puma
Same weakness: CWE-770

V. Comments for CVE-2019-16770

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