CVE-2022-24790
Publication date 30 March 2022
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.
Status
Package | Ubuntu Release | Status |
---|---|---|
puma | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Fixed 5.5.2-2ubuntu2+esm1
|
|
20.04 LTS focal |
Fixed 3.12.4-1ubuntu2+esm1
|
|
16.04 LTS xenial | Ignored end of standard support | |
14.04 LTS trusty | Ignored end of standard support |
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alexmurray
for focal the patch needs to be backported manually along with the fix for CVE-2020-11076
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 · High |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6682-1
- Puma vulnerabilities
- 7 March 2024