CVE-2020-11869: Integer Overflow
First published: Mon Apr 27 2020(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | >=4.0.1<=4.2.0 | |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.1.1+ds-2 1:9.1.1+ds-4 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2020/04/24/2
- https://git.qemu.org/?p=qemu.git;a=commit;h=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7
- https://usn.ubuntu.com/4372-1/
- https://launchpad.net/bugs/cve/CVE-2020-11869
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7
- https://git.qemu.org/?p=qemu.git;a=commitdiff;h=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7
- https://www.openwall.com/lists/oss-security/2020/04/24/2
- https://security-tracker.debian.org/tracker/CVE-2020-11869
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11869
- https://nvd.nist.gov/vuln/detail/CVE-2020-11869
- https://ubuntu.com/security/CVE-2020-11869
Frequently Asked Questions
What is CVE-2020-11869?
CVE-2020-11869 is an integer overflow vulnerability found in QEMU 4.0.1 through 4.2.0 in the way it implemented ATI VGA emulation.
How does CVE-2020-11869 affect QEMU?
CVE-2020-11869 affects QEMU versions 4.0.1 through 4.2.0.
What is the severity of CVE-2020-11869?
The severity of CVE-2020-11869 is rated as low with a CVSS score of 3.3.
What is the impact of CVE-2020-11869?
CVE-2020-11869 could allow a malicious guest to crash the QEMU process or potentially execute arbitrary code.
How can I fix CVE-2020-11869?
To fix CVE-2020-11869, it is recommended to update QEMU to version 4.2.0 or higher, or apply the necessary patches provided by the vendor.
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