CVE-2021-4122

It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
PHYSICAL
LOW
NONE
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
VendorProductVersion
cryptsetup_projectcryptsetup
𝑥
< 2.3.7
cryptsetup_projectcryptsetup
2.4.0 ≤
𝑥
< 2.4.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
cryptsetup
bullseye (security)
2:2.3.7-1+deb11u1
fixed
bullseye
2:2.3.7-1+deb11u1
fixed
buster
not-affected
stretch
not-affected
bookworm
2:2.6.1-4~deb12u2
fixed
sid
2:2.7.5-1
fixed
trixie
2:2.7.5-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
cryptsetup
jammy
Fixed 2:2.4.3-1ubuntu1
released
impish
Fixed 2:2.3.7-0ubuntu0.21.10.1
released
hirsute
ignored
focal
Fixed 2:2.2.2-3ubuntu2.4
released
bionic
not-affected
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2021-4122
https://bugzilla.redhat.com/show_bug.cgi?id=2031859
https://bugzilla.redhat.com/show_bug.cgi?id=2032401
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c
https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes
https://access.redhat.com/security/cve/CVE-2021-4122
https://bugzilla.redhat.com/show_bug.cgi?id=2031859
https://bugzilla.redhat.com/show_bug.cgi?id=2032401
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c
https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes