Vulnerability · Published Dec 11, 2020 · Assigned by mitre

CVE-2020-17467

Critical 9.1

In plain English

A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.1% (higher than 88% of all known vulnerabilities).

Severity (CVSS NVD)9.1Critical

Exploit odds (30 days)3.1%top 12.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check for '\0' termination. Therefore, the deduced length of the hostname doesn't reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://www.kb.cert.org/vuls/id/815128 x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 x_refsource_MISC
http://fnet.sourceforge.net/manual/fnet_history.html x_refsource_CONFIRM