CVE-2023-3354
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
Timeline
- CVE published
- Record last updated
Affected versions
- n/a qemu
Version range not reported
- qemu-kvm
Version range not reported
- qemu-kvm
Version range not reported
- qemu-kvm-ma
Version range not reported
- virt:rhel/qemu-kvm
Version range not reported
- virt:av/qemu-kvm
Version range not reported
- qemu-kvm
Version range not reported
- qemu-kvm-rhev
Version range not reported
- qemu
Version range not reported
- qemu
Version range not reported