CVE-2023-20244 is a denial of service (DoS) vulnerability in Cisco Firepower Threat Defense (FTD) Software affecting Cisco Firepower 2100 Series Firewalls. It stems from improper handling of specific packets by the inspection engine. An unauthenticated, remote attacker can exploit this by sending crafted packets, leading to resource exhaustion and either traffic loss or an unexpected device reload. This vulnerability is rated 8.6 HIGH on the CVSS scale, indicating a critical risk. It requires no user interaction or authentication, making it easily exploitable over the network with low attack complexity. The primary impact is high availability loss (DoS). Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. While there is limited community discussion and media coverage, organizations should still prioritize patching due to the high severity and ease of exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6.2.3CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:6.2.3:*:*:*:*:*:*:* | ||
6.2.3.1CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.1:*:*:*:*:*:*:* | ||
6.2.3.2CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.2:*:*:*:*:*:*:* | ||
6.2.3.3CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.3:*:*:*:*:*:*:* | ||
6.2.3.4CPE matchmatch criteria | cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.4:*:*:*:*:*:*:* |
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.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.