Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 8.0.3 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 38 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2024:2135
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/security/cve/CVE-2023-3255Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2218486Issue TrackingPatchThird Party Advisory
- https://access.redhat.com/errata/RHSA-2024:2135
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/security/cve/CVE-2023-3255Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2218486Issue TrackingPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20231020-0008/
FAQ
What is CVE-2023-3255?
CVE-2023-3255 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 `...
How severe is CVE-2023-3255?
CVE-2023-3255 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-3255?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Redhat Enterprise Linux, Fedoraproject Fedora.