What is CVE-2019-9748?

CVE-2019-9748 is a critical-severity vulnerability in Tinysvcmdns Project, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2019-03-13.

How severe is CVE-2019-9748?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Out-of-bounds Read in Tinysvcmdns Project

CVE-2019-9748

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."

Vulnerability class: Buffer Overflow

EPSS: 0.024 (82.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Tinysvcmdns_project Tinysvcmdns
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-9748?: CVE-2019-9748 is a critical-severity vulnerability in Tinysvcmdns Project, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2019-03-13.
How severe is CVE-2019-9748?: Critical severity. CVSS v3 base score is 9.1 out of 10.