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
Vulnerable Configurations
  • cpe:2.3:a:qemu:qemu:4.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:qemu:qemu:4.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:*
  • 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
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:L/AC:L/Au:N/C:N/I:N/A:P
refmap via4
confirm https://git.qemu.org/?p=qemu.git;a=commit;h=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7
misc http://www.openwall.com/lists/oss-security/2020/04/24/2
ubuntu USN-4372-1
Last major update 28-05-2020 - 23:15
Published 27-04-2020 - 19:15
Last modified 28-05-2020 - 23:15
Back to Top