CVE-2020-11077

Description

In Puma (RubyGem) before 4.3.5 and 3.12.6, a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first requests body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This is a similar but different vulnerability from CVE-2020-11076. The problem has been fixed in Puma 3.12.6 and Puma 4.3.5.

Risk Information

Base Score

7.5

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Score

Exploitation Probability

0.821

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2020-11077 are fixed in Ruby-puma 3.12.6	Windows
Vulnerabilities CVE-2020-11077 are fixed in Ruby-puma 4.3.5	Windows
Multiple Vulnerabilities are affected in IBM Operational Decision Manager 8.11.0.1	Windows
Multiple Vulnerabilities are affected in IBM Operational Decision Manager 8.11.1	Windows
Multiple Vulnerabilities are affected in IBM Operational Decision Manager 8.10.4	Windows
Multiple Vulnerabilities are affected in IBM Operational Decision Manager 8.10.5.2	Windows
Multiple Vulnerabilities are affected in IBM Operational Decision Manager 8.12.0.1	Windows
Vulnerabilities CVE-2020-11077 are fixed in Ruby-puma for Linux 3.12.6	Linux
Vulnerabilities CVE-2020-11077 are fixed in Ruby-puma for Linux 4.3.5	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234