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AUSCERT External Security Bulletin Redistribution
JSA11180 - 2021-07 Security Bulletin: Steel-Belted Radius Carrier Edition:
Remote code execution vulnerability when EAP Authentication
is configured. (CVE-2021-0276)
15 July 2021
AusCERT Security Bulletin Summary
Product: Steel-Belted Radius(SBR) Carrier
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2021-0276
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2021-07 Security Bulletin: Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authentication is configured. (CVE-2021-0276)
Article ID : JSA11180
Last Updated: 14 Jul 2021
Version : 1.0
This issue affects SBR Carrier 8.4.1, 8.5.0, 8.6.0.
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
This issue affects Juniper Networks SBR Carrier:
o 8.4.1 versions prior to 8.4.1R19;
o 8.5.0 versions prior to 8.5.0R10;
o 8.6.0 versions prior to 8.6.0R4.
This issue affects SBR Carrier with EAP authentication configured only when
using Enhanced EAP Logging and TraceLevel setting of 2.
EnhancedEAPLogging = yes
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2021-0276 .
The following software releases have been updated to resolve this specific
issue: 8.4.1R19, 8.5.0R10, 8.6.0R4 and all subsequent releases.
This issue is being tracked as 1465201 .
There are no viable workarounds for this issue.
Software releases or updates are available for download at https://
2021-07-14: Initial Publication.
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common
Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."
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