| ID |
CVE-2020-8833
|
| Sažetak |
Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22. |
| Reference |
|
| CVSS |
| Base: | 1.9 |
| Impact: | 2.9 |
| Exploitability: | 3.4 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
MEDIUM |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| PARTIAL |
NONE |
NONE |
|
| CVSS vektor |
AV:L/AC:M/Au:N/C:P/I:N/A:N |
| Zadnje važnije ažuriranje |
07-10-2022 - 15:14 |
| Objavljeno |
22-04-2020 - 22:15 |
