National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-9747 Detail

Current 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."

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bitbucket.org/geekman/tinysvcmdns/issues/11/denial-of-service-vulnerability-infinite Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:tinysvcmdns_project:tinysvcmdns:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2018-01-16


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9747
NVD Published Date:
03/13/2019
NVD Last Modified:
03/14/2019