Vulnerability Description
In tinysvcmdns through 2018-01-16, an mDNS server processing a crafted packet can perform arbitrary data read operations up to 16383 bytes from the start of the buffer. This can lead to a segmentation fault in uncompress_nlabel in mdns.c and a crash of the server (depending on the memory protection of the CPU and the operating system), or disclosure of memory content via error messages or a server response. 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."
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tinysvcmdns Project | Tinysvcmdns | <= 2018-01-16 |
Related Weaknesses (CWE)
References
- https://bitbucket.org/geekman/tinysvcmdns/issues/10/arbitrary-memory-read-while-ExploitThird Party Advisory
- https://bitbucket.org/geekman/tinysvcmdns/issues/10/arbitrary-memory-read-while-ExploitThird Party Advisory
FAQ
What is CVE-2019-9748?
CVE-2019-9748 is a vulnerability with a CVSS score of 9.1 (CRITICAL). In tinysvcmdns through 2018-01-16, an mDNS server processing a crafted packet can perform arbitrary data read operations up to 16383 bytes from the start of the buffer. This can lead to a segmentation...
How severe is CVE-2019-9748?
CVE-2019-9748 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-9748?
Check the references section above for vendor advisories and patch information. Affected products include: Tinysvcmdns Project Tinysvcmdns.