ID |
CVE-2020-11869
|
Summary |
An integer overflow was found in QEMU 4.0.1 through 4.2.0 in the way it implemented ATI VGA emulation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati-2d.c while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service. |
References |
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Vulnerable Configurations |
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cpe:2.3:a:qemu:qemu:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:4.0.1:*:*:*:*:*:*:*
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cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:*
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cpe:2.3:a:qemu:qemu:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:4.1.1:*:*:*:*:*:*:*
-
cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*
|
CVSS |
Base: | 2.1 (as of 28-05-2020 - 23:15) |
Impact: | |
Exploitability: | |
|
CWE |
CWE-190 |
CAPEC |
-
Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
|
Access |
Vector | Complexity | Authentication |
LOCAL |
LOW |
NONE |
|
Impact |
Confidentiality | Integrity | Availability |
NONE |
NONE |
PARTIAL |
|
cvss-vector
via4
|
AV:L/AC:L/Au:N/C:N/I:N/A:P
|
refmap
via4
|
|
Last major update |
28-05-2020 - 23:15 |
Published |
27-04-2020 - 19:15 |
Last modified |
28-05-2020 - 23:15 |