CVE-2021-0276 — CRITICAL (9.8)

Vulnerability Description

A stack-based Buffer Overflow vulnerability in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured, allows an attacker sending specific packets causing the radius daemon to crash resulting with a Denial of Service (DoS) or leading to remote code execution (RCE). By continuously sending this specific packets, an attacker can repeatedly crash the radius daemon, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks SBR Carrier: 8.4.1 versions prior to 8.4.1R19; 8.5.0 versions prior to 8.5.0R10; 8.6.0 versions prior to 8.6.0R4.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Juniper	Steel-Belted Radius Carrier	8.4.1

Related Weaknesses (CWE)

CWE-121 CWE-787

References

https://kb.juniper.net/JSA11180Vendor Advisory
https://kb.juniper.net/JSA11180Vendor Advisory

FAQ

What is CVE-2021-0276?

CVE-2021-0276 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A stack-based Buffer Overflow vulnerability in Juniper Networks SBR Carrier with EAP (Extensible Authentication Protocol) authentication configured, allows an attacker sending specific packets causing...

How severe is CVE-2021-0276?

CVE-2021-0276 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-0276?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Steel-Belted Radius Carrier.