Memory leak in Junos OS - CVE-2021-0230
Published: April 15, 2021
Vulnerability identifier: #VU52227
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-0230
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform DoS attack on the target system.
The vulnerability exists due memory leak On Juniper Networks Junos OS platforms with link aggregation (lag) configured. A local user can execute any operation that fetches Aggregated Ethernet (AE) interface statistics, including but not limited to SNMP GET requests, and trigger a slow kernel memory leak.
Affected software
Junos OS
How to mitigate CVE-2021-0230
Install updates from vendor's website.
Junos OS - addressed in versions 17.3R3-S11, 17.4R3-S5, 18.2R3-S7, 18.2R3-S8, 18.3R3-S4, 18.4R2-S7, 18.4R3-S6, 19.1R3-S4, 19.2R1-S6, 19.3R3-S1, 19.4R3-S1, 20.1R2, 20.1R3, 20.2R2-S2, 20.2R3, 20.3R1-S2, 20.3R2, 20.4R1