Main Vulnerability Database Vulnerabilities #VU39307

Integer overflow in TigerVNC - CVE-2017-7395

Published: April 1, 2017 / Updated: August 8, 2020

Vulnerability identifier: #VU39307

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-7395

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.

In TigerVNC 1.7.1 (SMsgReader.cxx SMsgReader::readClientCutText), by causing an integer overflow, an authenticated client can crash the server.

TigerVNC
Fedora
tigervnc

Install update from vendor's website.

tigervnc - addressed in versions 1.7.1-3.fc25, 1.7.1-4.fc24, 1.7.1-4.fc26