#VU105997 Out-of-bounds write in smartdns - CVE-2023-31470
Published: March 25, 2025
Vulnerability identifier: #VU105997
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-31470
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
smartdns
smartdns
Software vendor:
Nick Peng
Nick Peng
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing DNS responses within the _dns_encode_domain() function in dns.c. A remote attacker can send a specially crafted DNS response to the server, trigger an out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.