PT-2023-5726 · Tightvnc · Tightvnc

CVE-2023-27830 · Publicado 2023-04-12 · Atualizado 2025-02-08

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Crítica

Vetor base

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TightVNC versions prior to 2.8.75

Description The issue is related to errors in privilege management, allowing remote attackers to escalate their privileges on the host operating system. This can be achieved by replacing legitimate files with crafted files during a file transfer, taking advantage of the fact that TightVNC runs with high privileges in the backend.

Recommendations For versions prior to 2.8.75, update to version 2.8.75 or later to resolve the issue. As a temporary workaround, consider restricting file transfer operations until the update is applied.

Exploit

Correção

Improper Privilege Management

Enumeração de Fraquezas

CWE-269

Identificadores relacionados

BDU:2023-06396

CVE-2023-27830

Produtos afetados

Tightvnc

Referências · 7

• 🔥 https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cce · Exploit
• https://bdu.fstec.ru/vul/2023-06396 · Nota de Segurança
• https://tightvnc.com/whatsnew.php · Nota
• https://tightvnc.com/news.php · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2023-27830 · Nota de Segurança
• https://t.me/cvenotify/110493 · Publicação no Telegram
• https://osv.dev/vulnerability/CVE-2023-27830 · Aviso do Fabricante