CVE-2022-20767 is a denial-of-service (DoS) vulnerability in the Snort rule evaluation function of Cisco Firepower Threat Defense (FTD) Software, specifically affecting devices running Snort 3. An unauthenticated, remote attacker can exploit this by sending crafted UDP packets, leading to a buildup of UDP connections and causing legitimate traffic to be dropped. With a CVSS score of 7.5 (HIGH), this vulnerability has a low attack complexity and requires no user interaction, resulting in a complete loss of availability for affected systems. Currently, there is no public exploit code available, it is not listed in CISA's KEV catalog, and there is no significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 7.0.2CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* | ||
7.1.0CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.