CVE-2020-24455
Publication date 26 February 2021
Last updated 24 July 2024
Ubuntu priority
Missing initialization of a variable in the TPM2 source may allow a privileged user to potentially enable an escalation of privilege via local access. This affects tpm2-tss before 3.0.1 and before 2.4.3.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| tpm2-tss | ||
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.7 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
References
Other references
- https://github.com/tpm2-software/tpm2-tss/commit/0cc5f0e12694f3780a8512fc37a7dbc542ea4330 (master)
- https://github.com/tpm2-software/tpm2-tss/commit/9536b79cd5a13884a7e4de7a571f72530180c20b (3.0.1)
- https://github.com/tpm2-software/tpm2-tss/commit/bf24b0ef0fa8de9300a323f70a097a1afd818439 (2.4.5)
- https://www.cve.org/CVERecord?id=CVE-2020-24455