CVE-2021-29157

2021-06-2100:00:00

ubuntu.com

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.0005 Low

EPSS

Percentile

16.6%

JSON

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.

Notes

Author	Note
mdeslaur	per upstream, this affects 2.3.11-2.3.14

OSVersionArchitecturePackageVersionFilename
ubuntu20.10noarchdovecot< 1:2.3.11.3+dfsg1-2ubuntu0.2UNKNOWN
ubuntu21.04noarchdovecot< 1:2.3.13+dfsg1-1ubuntu1.1UNKNOWN
ubuntu21.10noarchdovecot< 2.3.13+dfsg1-1ubuntu2UNKNOWN
ubuntu22.04noarchdovecot< 2.3.13+dfsg1-1ubuntu2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.10	noarch	dovecot	< 1:2.3.11.3+dfsg1-2ubuntu0.2	UNKNOWN
ubuntu	21.04	noarch	dovecot	< 1:2.3.13+dfsg1-1ubuntu1.1	UNKNOWN
ubuntu	21.10	noarch	dovecot	< 2.3.13+dfsg1-1ubuntu2	UNKNOWN
ubuntu	22.04	noarch	dovecot	< 2.3.13+dfsg1-1ubuntu2	UNKNOWN