| ID |
CVE-2018-12633
|
| Sažetak |
An issue was discovered in the Linux kernel through 4.17.2. vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c reads the same user data twice with copy_from_user. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables (hdr.size_in and hdr.size_out) in the header between the two fetches because of a race condition, leading to severe kernel errors, such as buffer over-accesses. This bug can cause a local denial of service and information leakage. |
| Reference |
|
| CVSS |
| Base: | 6.3 |
| Impact: | 9.2 |
| Exploitability: | 3.4 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
MEDIUM |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| COMPLETE |
NONE |
COMPLETE |
|
| CVSS vektor |
AV:L/AC:M/Au:N/C:C/I:N/A:C |
| Zadnje važnije ažuriranje |
21-08-2018 - 15:42 |
| Objavljeno |
22-06-2018 - 00:29 |
