{"id": "SMNTC-110590", "type": "symantec", "bulletinFamily": "software", "title": "Dnsmasq CVE-2019-14834 Remote Denial of Service Vulnerability", "description": "### Description\n\nDnsmasq is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause a denial-of-service condition, denying service to legitimate users. Dnsmasq versions 2.90 and prior are vulnerable.\n\n### Technologies Affected\n\n * Dnsmasq Dnsmasq 2.0.0 \n * Dnsmasq Dnsmasq 2.1.0 \n * Dnsmasq Dnsmasq 2.10.0 \n * Dnsmasq Dnsmasq 2.11.0 \n * Dnsmasq Dnsmasq 2.12.0 \n * Dnsmasq Dnsmasq 2.13.0 \n * Dnsmasq Dnsmasq 2.14.0 \n * Dnsmasq Dnsmasq 2.15.0 \n * Dnsmasq Dnsmasq 2.16.0 \n * Dnsmasq Dnsmasq 2.17.0 \n * Dnsmasq Dnsmasq 2.18.0 \n * Dnsmasq Dnsmasq 2.19.0 \n * Dnsmasq Dnsmasq 2.2.0 \n * Dnsmasq Dnsmasq 2.20.0 \n * Dnsmasq Dnsmasq 2.21.0 \n * Dnsmasq Dnsmasq 2.22.0 \n * Dnsmasq Dnsmasq 2.29.0 \n * Dnsmasq Dnsmasq 2.30 \n * Dnsmasq Dnsmasq 2.35 \n * Dnsmasq Dnsmasq 2.4.0 \n * Dnsmasq Dnsmasq 2.4.1 \n * Dnsmasq Dnsmasq 2.40 \n * Dnsmasq Dnsmasq 2.41 \n * Dnsmasq Dnsmasq 2.42 \n * Dnsmasq Dnsmasq 2.43 \n * Dnsmasq Dnsmasq 2.44 \n * Dnsmasq Dnsmasq 2.45 \n * Dnsmasq Dnsmasq 2.46 \n * Dnsmasq Dnsmasq 2.47 \n * Dnsmasq Dnsmasq 2.48 \n * Dnsmasq Dnsmasq 2.49 \n * Dnsmasq Dnsmasq 2.5.0 \n * Dnsmasq Dnsmasq 2.50 \n * Dnsmasq Dnsmasq 2.6.0 \n * Dnsmasq Dnsmasq 2.62 \n * Dnsmasq Dnsmasq 2.7.0 \n * Dnsmasq Dnsmasq 2.80 \n * Dnsmasq Dnsmasq 2.90 \n\n### Recommendations\n\n**Run all software as a nonprivileged user with minimal access rights.** \nTo reduce the impact of latent vulnerabilities, run the application with the minimal amount of privileges required for functionality.\n\n**Deploy network intrusion detection systems to monitor network traffic for malicious activity.** \nDeploy NIDS to monitor network traffic for signs of anomalous or suspicious activity including unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.\n\n**Do not accept or execute files from untrusted or unknown sources.** \nTo reduce the likelihood of successful exploits, never handle files that originate from unfamiliar or untrusted sources. \n\nUpdates are available. 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A successful attack is dependent on a specific configuration regarding the domain name set into the dnsmasq.conf file. Over time, the memory leak may cause the process to run out of memory and terminate, causing a denial of service. 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