CVE-2021-0216 — Uncontrolled Resource Consumption in Networks Junos OS

CWE-400 — Uncontrolled Resource Consumption4 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 76.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Juniper Networks Junos OSJuniper Junos
Timeline
PublishedApr 22
Latest updateMay 24

Description

A vulnerability in Juniper Networks Junos OS running on the ACX5448 and ACX710 platforms may cause BFD sessions to flap when a high rate of transit ARP packets are received. This, in turn, may impact routing protocols and network stability, leading to a Denial of Service (DoS) condition. When a high rate of transit ARP packets are exceptioned to the CPU and BFD flaps, the following log messages may be seen: bfdd[15864]: BFDD_STATE_UP_TO_DOWN: BFD Session 192.168.14.3 (IFL 232) state Up -> Down L…

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5juniper_networks/junos_os18.2 — 18.2R3-S8+8
▶NVDjuniper/junos9 versions+8

🔴Vulnerability Details

2
GHSA
GHSA-p2qm-vw5x-72gx: A vulnerability in Juniper Networks Junos OS running on the ACX5448 and ACX710 platforms may cause BFD sessions to flap when a high rate of transit AR↗2022-05-24
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CVEList
Junos OS: ACX5448, ACX710: BFD sessions might flap due to high rate of transit ARP packets↗2021-04-22
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📋Vendor Advisories

1
Juniper
CVE-2021-0216: A vulnerability in Juniper Networks Junos OS running on the ACX5448 and ACX710 platforms may cause BFD sessions to flap when a high rate of transit AR↗2021-04-22
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CVE-2021-0216 — Uncontrolled Resource Consumption | cvebase