Main Vulnerability Database Vulnerabilities #VU38512

Input validation error in GnuTLS - CVE-2016-4456

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

Vulnerability identifier: #VU38512

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2016-4456

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: GnuTLS

Affected software:
GnuTLS

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The "GNUTLS_KEYLOGFILE" environment variable in gnutls 3.4.12 allows remote attackers to overwrite and corrupt arbitrary files in the filesystem.

Install update from vendor's website.