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Exploits
ID:1337 - Exploit for Memory exhaustion in Dnsmasq - CVE-2017-14495
ID:1337 - Exploit for Memory exhaustion in Dnsmasq - CVE-2017-14495
Published: March 18, 2020
Vulnerability identifier: #VU8664
Vulnerability risk: Medium
CVE-ID: CVE-2017-14495
CWE-ID: CWE-400
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 incorrect memory allocation (memory is never freed) in add_pseudoheader() function when processing DNS queries. A remote unauthenticated attacker can send a specially crafted DNS request to the affected service and cause dnsmasq to consume all available memory.
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.