Bug 2218486 (CVE-2023-3255)
| Summary: | CVE-2023-3255 QEMU: VNC: infinite loop in inflate_buffer() leads to 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: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | ddepaula, jen, jferlan, jmaloy, knoel, mkenneth, mrezanin, mst, pbonzini, virt-maint, ymankad |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu 8.1.0-rc0 | Doc Type: | --- |
| Doc Text: |
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger 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: | 2218488, 2218489, 2219543 | ||
| Bug Blocks: | 2203252 | ||
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Description
Mauro Matteo Cascella
2023-06-29 10:52:04 UTC
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 2219543] Upstream commit: https://gitlab.com/qemu-project/qemu/-/commit/d921fea3 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:2135 https://access.redhat.com/errata/RHSA-2024:2135 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:2962 https://access.redhat.com/errata/RHSA-2024:2962 |