Vulnerability · Published Dec 11, 2020 · Assigned by mitre

CVE-2020-17470

Medium 5.3

In plain English

A medium-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 2.1% (higher than 82% of all known vulnerabilities).

Severity (CVSS NVD)5.3Medium

Exploit odds (30 days)2.1%top 18.2% 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 that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

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