CVE-2019-9747

In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query

published March 13, 2019

CVSS
—
EPSS
1%
Percentile
72.1
In the wild
Unconfirmed
What it is

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."

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01390 · 72.1th percentile
Published
2019-03-13T19:00Z
EPSS history
Timeline
  • 13 MAR 19:00Z
    In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query
    cvelistv5