SB2023021577 - Denial of service in QEMU VNC server
Published: February 15, 2023
Security Bulletin ID
SB2023021577
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) Integer underflow (CVE-ID: CVE-2022-3165)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow in the QEMU VNC server while processing ClientCutText messages in the extended format. A remote client can send a specially crafted payload message to the VNC server and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://gitlab.com/qemu-project/qemu/-/commit/d307040b18
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I36LKZA7Z65J3LJU2P37LVTWDFTXBMPU/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTY7TVHX62OJWF6IOBCIGLR2N5K4QN3E/
- https://security.netapp.com/advisory/ntap-20221223-0006/