CVE-2023-27539

There is a denial of service vulnerability in the header parsing component of Rack.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
hackeroneCNA
---
---
CISA-ADPADP
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 54%
VendorProductVersion
rackrack
2.0.0 ≤
𝑥
< 2.2.6.4
rackrack
3.0.0 ≤
𝑥
< 3.0.6.1
debiandebian_linux
10.0
debiandebian_linux
11.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ruby-rack
bullseye (security)
2.1.4-3+deb11u2
fixed
bullseye
2.1.4-3+deb11u2
fixed
bookworm
2.2.6.4-1+deb12u1
fixed
bookworm (security)
2.2.6.4-1+deb12u1
fixed
sid
2.2.7-1.1
fixed
trixie
2.2.7-1.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ruby-rack
oracular
not-affected
noble
not-affected
mantic
Fixed 2.2.4-3ubuntu0.1
released
lunar
ignored
kinetic
ignored
jammy
Fixed 2.1.4-5ubuntu1.1
released
focal
Fixed 2.0.7-2ubuntu0.1+esm4
released
bionic
Fixed 1.6.4-4ubuntu0.2+esm5
released
xenial
Fixed 1.6.4-3ubuntu0.2+esm5
released
trusty
Fixed 1.5.2-3+deb8u3ubuntu1~esm7
released
References
https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466
https://github.com/advisories/GHSA-c6qg-cjj8-47qp
https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c
https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff
https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html
https://security.netapp.com/advisory/ntap-20231208-0016/
https://www.debian.org/security/2023/dsa-5530