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CVE-2021-0276— Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authentication is configured.

Quick assessment

Affected
Juniper Networks SBR Carrier
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Juniper Networks SBR Carrier是美国瞻博网络（Juniper Networks）公司的一套适用于运营商的AAA（Authentication、Authorization和Accounting ）服务器。该产品主要提供网络资源管理、用户访问控制和计费等功能。 Juniper Networks SBR Carrier 存在安全漏洞，该漏洞源于。该漏洞允许攻击者发送特定数据包，导致 Radius 守护程序崩溃，从而导致拒绝服务 (DoS) 或导致远程代码执行（ RCE）。

CVSS 9.8 · Critical EPSS 2.31% · P83
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I. Basic Information for CVE-2021-0276

Vulnerability Information
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Vulnerability Title
Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authentication is configured.
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks SBR Carrier 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks SBR Carrier是美国瞻博网络（Juniper Networks）公司的一套适用于运营商的AAA（Authentication、Authorization和Accounting ）服务器。该产品主要提供网络资源管理、用户访问控制和计费等功能。 Juniper Networks SBR Carrier 存在安全漏洞，该漏洞源于。该漏洞允许攻击者发送特定数据包，导致 Radius 守护程序崩溃，从而导致拒绝服务 (DoS) 或导致远程代码执行（ RCE）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks SBR Carrier 8.4.1 ~ 8.4.1R19 -

II. Public POCs for CVE-2021-0276

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III. Intelligence Information for CVE-2021-0276

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Vendor Advisories for CVE-2021-0276 (1)

Same Patch Batch · Juniper Networks · 2021-07-15 · 19 CVEs total

CVE-2021-0277 8.8 HIGH Junos OS and Junos OS Evolved: LLDP Out-of-Bounds Read vulnerability in l2cpd
CVE-2021-0278 8.8 HIGH Junos OS: J-Web allows a locally authenticated attacker to escalate their privileges to ro
CVE-2021-0279 8.6 HIGH Contrail Cloud: Hardcoded credentials for RabbitMQ service
CVE-2021-0286 7.5 HIGH Junos OS Evolved: Specially crafted packets may cause the AFT manager process to crash and
CVE-2021-0280 7.5 HIGH Junos OS: PTX Series, QFX10K Series: Upon receipt of specific packets BFD sessions might f
CVE-2021-0282 7.5 HIGH Junos OS: RPD crash while processing a specific BGP UPDATE when Multipath or add-path feat
CVE-2021-0283 7.5 HIGH Junos OS: Upon receipt of specific sequences of genuine packets destined to the device the
CVE-2021-0285 7.5 HIGH Junos OS: QFX5000 Series and EX4600 Series: Continuous traffic destined to a device config
CVE-2021-0287 6.5 MEDIUM Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap o
CVE-2021-0288 6.5 MEDIUM Junos OS: MX Series, EX9200 Series: FPC may crash upon receipt of specific MPLS packet aff
CVE-2021-0289 6.5 MEDIUM Junos OS: User-defined ARP Policer isn't applied on Aggregated Ethernet (AE) interface unt
CVE-2021-0290 6.5 MEDIUM Junos OS: MX Series, EX9200 Series, SRX4600: Ethernet interface vulnerable to specially cr
CVE-2021-0291 6.5 MEDIUM Junos OS and Junos OS Evolved: A vulnerability allows a network based unauthenticated atta
CVE-2021-0292 6.5 MEDIUM Junos OS Evolved: Memory leak in arpd or ndp processes can lead to Denial of Service (DoS)
CVE-2021-0295 6.1 MEDIUM Junos OS: QFX10K Series: Denial of Service (DoS) upon receipt of DVMRP packets received on
CVE-2021-0281 5.9 MEDIUM Junos OS and Junos OS Evolved: Specific packets can trigger rpd crash when BGP Origin Vali
CVE-2021-0293 5.5 MEDIUM Junos OS: Out-of-memory condition and crashes can occur after executing a certain CLI comm
CVE-2021-0294 5.3 MEDIUM Junos OS: QFX5000 Series and EX4600 Series: Enhanced storm control might not work leading

IV. Related Vulnerabilities

Same product: SBR Carrier
Same vendor: Juniper Networks
Same weakness: CWE-121

V. Comments for CVE-2021-0276

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