CVE-2023-3354
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
Summary
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
Original description
The description as published by the source.
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.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2023-3354 qemu Fixed in: 1:5.2+dfsg-11+deb11u3
- Ubuntu UBUNTU-CVE-2023-3354 qemu Fixed in: 1:2.11+dfsg-1ubuntu7.42+esm5
References
- advisory access.redhat.com
- advisory github.com
- advisory nvd.nist.gov
- report bugzilla.redhat.com
- web access.redhat.com
- web lists.debian.org
- web lists.fedoraproject.org
- web packages.fedoraproject.org