#VU8666 Memory corruption in Dnsmasq - CVE-2017-13704
Published: October 3, 2017
Vulnerability identifier: #VU8666
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-13704
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Dnsmasq
Dnsmasq
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to boundary error in when processing DNS queries longer than 512 bytes or EDNS0 packet size is different. A remote unauthenticated attacker can send a specially crafted DNS request to the affected service and trigger the application crash.
Successful exploitation of this vulnerability may allow an attacker to perform a denial of service (DoS) attack.
Remediation
Update to version 2.78.