CVE-2023-3255
MEDIUM EPSS 69.2%
Published Sep 13, 20232y ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Published Sep 13, 2023 2y ago
Last Modified Jun 17, 2026 1w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
69.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-835
Affected Products 4
| Vendor | Product | Version | Range |
|---|---|---|---|
| qemu | qemu | * | ≤8.0.3 |
| redhat | enterprise_linux | 8.0 | any |
| redhat | enterprise_linux | 9.0 | any |
| fedoraproject | fedora | 38 | any |
References 5
- access.redhat.com https://access.redhat.com/errata/RHSA-2024:2135
- access.redhat.com https://access.redhat.com/errata/RHSA-2024:2962
- access.redhat.com https://access.redhat.com/security/cve/CVE-2023-3255
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2218486
- security.netapp.com https://security.netapp.com/advisory/ntap-20231020-0008/
Remediation
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2218486