CVE-2020-36425
Publication date 19 July 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
An issue was discovered in Arm Mbed TLS before 2.24.0. It incorrectly uses a revocationDate check when deciding whether to honor certificate revocation via a CRL. In some situations, an attacker can exploit this by changing the local clock.
Status
Package | Ubuntu Release | Status |
---|---|---|
mbedtls | 24.10 oracular |
Not affected
|
24.04 LTS noble |
Not affected
|
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Vulnerable
|
|
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial |
Needs evaluation
|
|
14.04 LTS trusty | Not in release |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.3 · Medium |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | Low |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
References
Other references
- https://github.com/ARMmbed/mbedtls/pull/3433
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
- https://github.com/ARMmbed/mbedtls/issues/3340
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
- https://github.com/ARMmbed/mbedtls/pull/3433
- https://bugs.gentoo.org/740108
- https://www.cve.org/CVERecord?id=CVE-2020-36425