CVE-2023-3255
Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service
- State
- Published
- Severity
- 6.5 Medium
- Published
- Sep 13, 2023
- Updated
- Nov 1, 2026
- Reserved
- Jun 14, 2023
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-835 Loop with Unreachable Exit Condition
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8 Advanced VirtualizationRed Hat |
References
- RHSA-2024:2135vendor-advisory
- RHSA-2024:2962vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-3255vdb-entry
- RHBZ#2218486issue-tracking
- https://security.netapp.com/advisory/ntap-20231020-0008/
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