#VU8660 Heap-based buffer overflow in Dnsmasq - CVE-2017-14491
Published: October 2, 2017 / Updated: March 2, 2021
Vulnerability identifier: #VU8660
Vulnerability risk: 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:P/U:Amber
CVE-ID: CVE-2017-14491
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Dnsmasq
Dnsmasq
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in dnsmasq.c file when processing DNS replies. A remote unauthenticated attacker can send specially crafted DNS packets to the affected service, trigger heap-based buffer overflow by 2 bytes and crash the service or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Update to version 2.78.