CVE-2020-11869

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 27 Apr 2020, 19:00
Last modified:04 Aug 2024, 11:42

Vulnerability Summary

Overall Risk (default)
low
13/100
CVSS Score
3.3 LOW
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Apr 2020, 19:00
Published
Vulnerability first disclosed
04 Aug 2024, 11:42
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•LOW•Score: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.09%• Percentile: 26%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • qemu•qemu

    ≥ 4.0.1, ≤ 4.2.0

References (3)