Heap-based buffer overflow in QEMU - CVE-2020-17380
Published: October 20, 2022
Vulnerability identifier: #VU68558
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-17380
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the SDHCI device emulation support while performing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A remote user of the guest OS can trigger a heap-based buffer overflow and crash the QEMU process on the host OS.
How to mitigate CVE-2020-17380
Install updates from vendor's website.
Sources
- https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1862167
- http://www.openwall.com/lists/oss-security/2021/03/09/1
- https://security.netapp.com/advisory/ntap-20210312-0003/
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html