CVE-2019-9748: tinysvcmdns_project tinysvcmdns Out-of-bounds Read

Vulnerability summary

CVE-2019-9748 is a high (CVSS 9.4) Out-of-bounds Read vulnerability in tinysvcmdns_project tinysvcmdns. EPSS estimates a 2.42% chance of exploitation in the next 30 days, higher than 83.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 13-03-2019
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

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."

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.