CVE-2022-25327
Published: 25 February 2022
The PAM module for fscrypt doesn't adequately validate fscrypt metadata files, allowing users to create malicious metadata files that prevent other users from logging in. A local user can cause a denial of service by creating a fscrypt metadata file that prevents other users from logging into the system. We recommend upgrading to version 0.3.3 or above
Priority
Status
Package | Release | Status |
---|---|---|
fscrypt
Launchpad, Ubuntu, Debian |
bionic |
Needed
|
focal |
Needed
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Not vulnerable
(0.3.3-1)
|
|
kinetic |
Not vulnerable
(0.3.3-1)
|
|
lunar |
Not vulnerable
(0.3.3-1)
|
|
mantic |
Not vulnerable
(0.3.3-1)
|
|
noble |
Not vulnerable
(0.3.3-1)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Released
(0.3.3)
|
|
xenial |
Ignored
(end of standard support)
|
|
Patches:
upstream: https://github.com/google/fscrypt/commit/1a47718420317f893831b0223153d56005d5b02b upstream: https://github.com/google/fscrypt/commit/74e870b7bd1585b4b509da47e0e75db66336e576 upstream: https://github.com/google/fscrypt/commit/b44fbe71e1e93c47050322af51725bac997641e0 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- https://www.openwall.com/lists/oss-security/2022/02/24/1
- https://github.com/google/fscrypt/commit/1a47718420317f893831b0223153d56005d5b02b
- https://github.com/google/fscrypt/commit/74e870b7bd1585b4b509da47e0e75db66336e576
- https://github.com/google/fscrypt/commit/b44fbe71e1e93c47050322af51725bac997641e0
- https://www.cve.org/CVERecord?id=CVE-2022-25327
- NVD
- Launchpad
- Debian