#VU55001 Out-of-bounds read in Juniper Junos OS and Junos OS Evolved - CVE-2021-0277
Published: July 20, 2021
Vulnerability identifier: #VU55001
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-0277
CWE-ID: CWE-125
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Juniper Junos OS
Junos OS Evolved
Juniper Junos OS
Junos OS Evolved
Software vendor:
Juniper Networks, Inc.
Juniper Networks, Inc.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the processing of specially crafted LLDP frames by the Layer 2 Control Protocol Daemon (l2cpd). A remote attacker on the local network can trigger out-of-bounds read error and cause a denial of service condition on the system.
Remediation
Install update from vendor's website.