CVE-2019-9747 - CVE House
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Status published High CVE-2019-9747

In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS)...

Vulnerability 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."

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from tinysvcmdns project

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CVE-2019-9748
In tinysvcmdns through 2018-01-16, an mDNS server processing a crafted...
Critical 9.1

Affected Vendor

tinysvcmdns project

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Affected Software

tinysvcmdns
Vulnerable Versions:
0

Timeline

Official Publish: March 13th, 2019
Last Modified: September 16th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.