CVE-2017-3883 is a denial-of-service vulnerability in the AAA implementation of Cisco FXOS and NX-OS System Software, affecting numerous Cisco Nexus and Firepower devices. An unauthenticated, remote attacker can trigger a device reload by performing a brute-force login attack, which overwhelms AAA processes and prevents keepalive messages. This vulnerability has a high CVSS score of 8.6, indicating a critical impact on availability with low attack complexity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.3CPE matchmatch criteria | cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:* | ||
2.3CPE matchmatch criteria | cpe:2.3:o:cisco:fxos:2.3:*:*:*:*:*:*:* | ||
5.2CPE matchmatch criteria | cpe:2.3:o:cisco:nx-os:5.2:*:*:*:*:*:*:* | ||
6.2CPE matchmatch criteria | cpe:2.3:o:cisco:nx-os:6.2:*:*:*:*:*:*:* | ||
6.3CPE matchmatch criteria | cpe:2.3:o:cisco:nx-os:6.3:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/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.