SB2021082034 - openEuler update for qemu
Published: August 20, 2021
Security Bulletin ID
SB2021082034
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Release of invalid pointer or reference (CVE-ID: CVE-2021-3682)
CWE-ID: CWE-763 - Release of invalid pointer or reference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists in the USB redirector device emulation of QEMU when dropping packets during a bulk transfer from a SPICE client. A remote user can make QEMU call free() with faked heap chunk metadata to perform a denial of service or escalate privileges on the system.
Remediation
Install update from vendor's website.