SB2021013008 - Denial of service in QEMU SDHCI device emulation
Published: January 30, 2021 Updated: October 20, 2022
Security Bulletin ID
SB2021013008
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2020-17380)
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.
Remediation
Install update from vendor's website.
References
- 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