CVE-2019-9747
7.5 · HIGHOverview
CVE-2019-9747 is a high-severity vulnerability affecting tinysvcmdns_project tinysvcmdns. It was published on March 13, 2019 and has a CVSS 3.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query. When mDNS compressed labels point to each other, the function uncompress_nlabel goes into an infinite loop trying to analyze the packet with an mDNS query. As a result, the mDNS server hangs after receiving the malicious mDNS packet. NOTE: the product's web site states "This project is un-maintained, and has been since 2013. ... There are known vulnerabilities ... You are advised to NOT use this library for any new projects / products."
Remediation
Check the references section for vendor advisories and patches from tinysvcmdns_project. Update tinysvcmdns to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tinysvcmdns_project | tinysvcmdns | 0 | Affected |
Frequently Asked Questions
What is CVE-2019-9747?
CVE-2019-9747 is a high-severity vulnerability affecting tinysvcmdns_project tinysvcmdns. It was published on March 13, 2019 and has a CVSS 3.0 base score of 7.5 (HIGH).
How severe is CVE-2019-9747?
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-9747?
Check the references section for vendor advisories and patches from tinysvcmdns_project. Update tinysvcmdns to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-9747?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-9747 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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