Out-of-bounds Read in Qemu
CVE-2019-20808
In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine 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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Qemu — versions 4.1.0
Weakness classification (CWE)
References
- git.qemu.org/
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20210205-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20808?
- CVE-2019-20808 is a medium-severity vulnerability in Qemu, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2020-12-31.
- How severe is CVE-2019-20808?
- Medium severity. CVSS v3 base score is 6.5 out of 10.