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CVE-2019-20808

Good to know:

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Date: December 30, 2020

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.

Language: C

Severity Score

Related Resources (9)

https://git.qemu.org/?p=qemu.git;a=commit;h=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13
https://nvd.nist.gov/vuln/detail/CVE-2019-20808
https://access.redhat.com/security/cve/CVE-2019-20808
https://security.netapp.com/advisory/ntap-20210205-0003/
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13
https://github.com/qemu/qemu/commit/aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13
https://bugzilla.redhat.com/show_bug.cgi?id=1841136
https://security-tracker.debian.org/tracker/CVE-2019-20808
https://www.mend.io/vulnerability-database/CVE-2019-20808

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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