Main
Vulnerability Database
Exploits
ID:1338 - Exploit for Memory corruption in Dnsmasq - CVE-2017-14496
ID:1338 - Exploit for Memory corruption in Dnsmasq - CVE-2017-14496
Published: March 18, 2020
Vulnerability identifier: #VU8665
Vulnerability risk: Medium
CVE-ID: CVE-2017-14496
CWE-ID: CWE-119
Exploitation vector: Remote access
Vulnerable software:
Dnsmasq
Dnsmasq
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to boundary error in add_pseudoheader() function when processing DNS queries. A remote unauthenticated attacker can send a specially crafted DNS request to the affected service, cause dnsmasq to call memcpy with negative size and crash.
Successful exploitation of this vulnerability may allow an attacker to perform a denial of service (DoS) attack, but requires that dnsmasq is compiled with --add-mac, --add-cpe-id or --add-subnet option.
Remediation
Update to version 2.78.