What is CVE-2021-0276?

CVE-2021-0276 is a critical-severity vulnerability in Juniper Steel-Belted Radius Carrier, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-07-15.

How severe is CVE-2021-0276?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Juniper Steel-Belted Radius Carrier

CVE-2021-0276

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.

Vulnerability class: Buffer Overflow

EPSS: 0.023 (81.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Juniper Steel-belted_radius_carrier — versions 8.4.1, 8.5.0, 8.6.0
Juniper Networks Sbr Carrier — versions 8.4.1, 8.5.0, 8.6.0

Weakness classification (CWE)

References

sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0276?: CVE-2021-0276 is a critical-severity vulnerability in Juniper Steel-Belted Radius Carrier, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-07-15.
How severe is CVE-2021-0276?: Critical severity. CVSS v3 base score is 9.8 out of 10.