CVE-2022-23634

Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
GitHub_MCNA
8 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CVEADP
---
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CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
VendorProductVersion
pumapuma
𝑥
< 4.3.11
pumapuma
5.0.0 ≤
𝑥
< 5.6.2
rubyonrailsrails
5.0.0 ≤
𝑥
< 5.2.6.2
rubyonrailsrails
6.0.0 ≤
𝑥
< 6.0.4.6
rubyonrailsrails
6.1.0 ≤
𝑥
< 6.1.4.6
rubyonrailsrails
7.0.0 ≤
𝑥
< 7.0.2.2
debiandebian_linux
9.0
debiandebian_linux
10.0
debiandebian_linux
11.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
puma
bullseye (security)
4.3.8-1+deb11u2
fixed
bullseye
4.3.8-1+deb11u2
fixed
bookworm
5.6.5-3
fixed
sid
6.4.2-6
fixed
trixie
6.4.2-6
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
puma
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
Fixed 5.5.2-2ubuntu2+esm1
released
impish
ignored
focal
Fixed 3.12.4-1ubuntu2+esm1
released
xenial
ignored
trusty
ignored
References