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CVE-2023-3255

Full vulnerability record from the local CVENow database.

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.

Severity
MEDIUM
CVSS score
6.5 (v3.1)
Vulnerability status
Modified
Source identifier
Published
2023-09-13 17:15:09.877000
Last modified
2026-11-07 12:17:31.277000
View original CVE JSON
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  "sourceIdentifier": "[email protected]",
  "published": "2023-09-13T17:15:09.877",
  "lastModified": "2026-11-07T12:17:31.277",
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      "value": "Se encontró una falla en el servidor VNC integrado de QEMU al procesar mensajes ClientCutText. Una condición de salida incorrecta puede provocar un bucle infinito al inflar un búfer zlib controlado por un atacante en la función `inflate_buffer`. Esto podría permitir que un cliente remoto autenticado que pueda enviar un portapapeles al servidor VNC active una denegación de servicio."
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