CVSS 3.1 Score 6.5 of 10 (medium)


Published Sep 13, 2023
Updated: May 22, 2024
CWE ID 835


CVE-2023-3255 is a vulnerability that affects the QEMU built-in VNC server. It occurs when processing ClientCutText messages and can result in an infinite loop if an attacker-controlled zlib buffer is inflated in the `inflate_buffer` function. This vulnerability can be exploited by a remote authenticated client with clipboard access, leading to a denial of service. The products affected by this vulnerability include exhcGF, d0rE62, XL7yXI, c5cVNU, c5cVNT, XL7yXC, XL7yXD, XL7yXA, and more. To remediate this issue, users are advised to apply the necessary patches or updates provided by the vendor. The base severity of this vulnerability is rated as MEDIUM with a base score of 6.5 according to CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.


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