CVE-2021-29157

Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
mitreCNA
7.5 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AC:H/AV:L/A:N/C:H/I:H/PR:L/S:C/UI:N
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 45%
VendorProductVersion
dovecotdovecot
2.3.11 ≤
𝑥
< 2.3.14.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
dovecot
bullseye
1:2.3.13+dfsg1-2+deb11u1
fixed
buster
not-affected
stretch
not-affected
bullseye (security)
1:2.3.13+dfsg1-2+deb11u2
fixed
bookworm
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
bookworm (security)
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
sid
1:2.3.21.1+dfsg1-1
fixed
trixie
1:2.3.21.1+dfsg1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
dovecot
jammy
Fixed 2.3.13+dfsg1-1ubuntu2
released
impish
Fixed 2.3.13+dfsg1-1ubuntu2
released
hirsute
Fixed 1:2.3.13+dfsg1-1ubuntu1.1
released
groovy
Fixed 1:2.3.11.3+dfsg1-2ubuntu0.2
released
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected