CVE-2021-0217 describes a Denial of Service (DoS) vulnerability in Juniper Networks Junos OS affecting EX Series and QFX Series switches when configured with DHCP local/relay server. Maliciously crafted DHCP packets from adjacent clients can exhaust DMA memory, leading to traffic forwarding cessation or fxpc process crashes. The vulnerability has a CVSS score of 7.4 (HIGH), indicating an attack vector of adjacent network, low attack complexity, and high impact on availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
17.4CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:* | ||
17.4CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.4:r3-s1:*:*:*:*:*:* | ||
17.4CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.4:r3-s2:*:*:*:*:*:* | ||
18.1CPE matchmatch criteria | cpe:2.3:o:juniper:junos:18.1:r3-s10:*:*:*:*:*:* | ||
18.1CPE matchmatch criteria | cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/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, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.