CVE-2021-33193

A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
apacheCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 76%
VendorProductVersion
debiandebian_linux
10.0
apachehttp_server
2.4.17 ≤
𝑥
< 2.4.49
tenabletenable.sc
𝑥
≤ 5.19.1
oraclesecure_backup
𝑥
< 18.1.0.1.0
oraclezfs_storage_appliance_kit
8.8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
apache2
bullseye
2.4.62-1~deb11u1
fixed
stretch
postponed
bullseye (security)
2.4.62-1~deb11u2
fixed
bookworm
2.4.62-1~deb12u1
fixed
bookworm (security)
2.4.62-1~deb12u2
fixed
sid
2.4.62-3
fixed
trixie
2.4.62-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
apache2
jammy
Fixed 2.4.48-3.1ubuntu2
released
impish
Fixed 2.4.48-3.1ubuntu2
released
hirsute
Fixed 2.4.46-4ubuntu1.2
released
focal
Fixed 2.4.41-4ubuntu3.5
released
bionic
Fixed 2.4.29-1ubuntu4.17
released
xenial
not-affected
trusty
not-affected
References