Bug 2216478 (CVE-2023-3354)
| Summary: | CVE-2023-3354 QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of service | ||
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| Product: | [Other] Security Response | Reporter: | Mauro Matteo Cascella <mcascell> |
| Component: | vulnerability | Assignee: | Nobody <nobody> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | ddepaula, dhughes, eglynn, jen, jferlan, jjoyce, jmaloy, knoel, lhh, mburns, mgarciac, mkenneth, mrezanin, mst, pbonzini, pgrist, virt-maint, ymankad |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2216502, 2216503, 2216504, 2216506, 2216507, 2216508, 2216509, 2216510, 2216511, 2218149, 2216505, 2216517, 2216518, 2216519 | ||
| Bug Blocks: | 2216474 | ||
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Description
Mauro Matteo Cascella
2023-06-21 14:50:09 UTC
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 2218149] |