CVE-2020-29443
First published: Wed Nov 18 2020(Updated: )
An out-of-bounds read access issue was found in the ATAPI Emulator of QEMU. It occurs while processing ATAPI read command if logical block address(LBA) is set an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario. Upstream patch: --------------- -> <a href="https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg04255.html">https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg04255.html</a> -> <a href="https://git.qemu.org/?p=qemu.git;a=commit;h=813212288970c39b1800f63e83ac6e96588095c6">https://git.qemu.org/?p=qemu.git;a=commit;h=813212288970c39b1800f63e83ac6e96588095c6</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/qemu-kvm | <10:1.5.3-175.el7_9.4 | 10:1.5.3-175.el7_9.4 |
| redhat/qemu-kvm-rhev | <10:2.12.0-48.el7_9.3 | 10:2.12.0-48.el7_9.3 |
| QEMU qemu | =5.1.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| 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
- https://www.cve.org/CVERecord?id=CVE-2020-29443 https://nvd.nist.gov/vuln/detail/CVE-2020-29443 https://www.openwall.com/lists/oss-security/2021/01/18/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1917446
- https://access.redhat.com/errata/RHBA-2021:0639
- https://access.redhat.com/errata/RHSA-2021:2322
- https://access.redhat.com/errata/RHSA-2021:1762
- https://access.redhat.com/errata/RHSA-2021:2529
- https://access.redhat.com/security/cve/cve-2020-29443
- http://www.openwall.com/lists/oss-security/2021/01/18/2
- https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://lists.nongnu.org/archive/html/qemu-devel/2020-11/msg04685.html
- https://security.netapp.com/advisory/ntap-20210304-0003/
- https://launchpad.net/bugs/cve/CVE-2020-29443
- https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg04255.html
- https://git.qemu.org/?p=qemu.git;a=commit;h=813212288970c39b1800f63e83ac6e96588095c6
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1917447
- https://www.openwall.com/lists/oss-security/2021/01/18/2
- https://git.qemu.org/?p=qemu.git;a=commit;h=b8d7f1bc59276fec85e4d09f1567613a3e14d31e
- https://security-tracker.debian.org/tracker/CVE-2020-29443
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29443
- https://nvd.nist.gov/vuln/detail/CVE-2020-29443
- https://ubuntu.com/security/CVE-2020-29443
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2020-29443?
CVE-2020-29443 is an out-of-bounds read-access vulnerability in the ATAPI Emulator of QEMU.
How does CVE-2020-29443 impact QEMU?
CVE-2020-29443 allows a guest user to crash the QEMU process on the host, resulting in a denial of service.
Which versions of QEMU are affected by CVE-2020-29443?
QEMU version 5.1.0 is affected by CVE-2020-29443.
How can I fix CVE-2020-29443?
To fix CVE-2020-29443, update QEMU to version 5.1.1 or later.
Is CVE-2020-29443 a high severity vulnerability?
No, CVE-2020-29443 has a severity rating of medium.
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