| ID |
CVE-2019-19581
|
| Sažetak |
An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service (out-of-bounds access) because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: On 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access may occur. A malicious guest may cause a hypervisor crash or hang, resulting in a Denial of Service (DoS). All versions of Xen are vulnerable. 32-bit Arm systems are vulnerable. 64-bit Arm systems are not vulnerable. |
| Reference |
|
| CVSS |
| Base: | 2.1 |
| Impact: | 2.9 |
| Exploitability: | 3.9 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
LOW |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| NONE |
NONE |
PARTIAL |
|
| CVSS vektor |
AV:L/AC:L/Au:N/C:N/I:N/A:P |
| Zadnje važnije ažuriranje |
07-11-2023 - 03:07 |
| Objavljeno |
11-12-2019 - 18:16 |
