ID |
CVE-2018-18438
|
Summary |
Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value. |
References |
|
Vulnerable Configurations |
-
cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:-:*:*:*:*:*:*:*
-
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
-
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
-
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*
-
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
-
cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*
-
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
-
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*
|
CVSS |
Base: | 2.1 (as of 04-08-2021 - 17:15) |
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
|
bid | 105953 | mlist | - [oss-security] 20181017 CVE-2018-18438 Qemu: Integer overflow in ccid_card_vscard_read() allows memory corruption
- [qemu-devel] 20181012 [PATCH v2 00/11] chardev: Convert IO handlers to use unsigned type
- [qemu-devel] 20181012 [PATCH v2 07/11] chardev: Let IOReadHandler use unsigned type
|
|
Last major update |
04-08-2021 - 17:15 |
Published |
19-10-2018 - 22:29 |
Last modified |
04-08-2021 - 17:15 |