Integer overflow in Unbound - CVE-2019-25038
Published: May 10, 2021
Vulnerability identifier: #VU53026
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-25038
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Unbound
Unbound
Software vendor:
NLnet Labs
NLnet Labs
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in dnscrypt/dnscrypt.c. A remote attacker can pass specially crafted data to the Unbound DNS server, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.