Stack-based buffer overflow in SBR Carrier - CVE-2021-0276
Published: July 19, 2021
Vulnerability identifier: #VU54992
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-0276
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing packets in in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured. A remote unauthenticated attacker can send specially crafted packets to the device, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
SBR Carrier
How to mitigate CVE-2021-0276
Install updates from vendor's website.
SBR Carrier - addressed in versions 8.4.1R19, 8.5.0R10, 8.6.0R4