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CVE-2021-0283— Junos OS: Upon receipt of specific sequences of genuine packets destined to the device the kernel will crash and restart (vmcore)

Quick assessment

Affected
Juniper Networks Junos OS
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 Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Junos OS 存在缓冲区错误漏洞，该漏洞源于设备的TCP/IP堆栈中的缓冲区溢出漏洞允许攻击者向设备发送特定的数据包序列，从而导致拒绝服务。以下产品及版本受到影响：Junos OS 12.3, 15.1, 16.1, 16.2, 17.1, 17.2, 17.3, 18.1, 18.2, 18.3, 18

CVSS 7.5 · High EPSS 0.99% · P61
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I. Basic Information for CVE-2021-0283

Vulnerability Information
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Vulnerability Title
Junos OS: Upon receipt of specific sequences of genuine packets destined to the device the kernel will crash and restart (vmcore)
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the TCP/IP stack of Juniper Networks Junos OS allows an attacker to send specific sequences of packets to the device thereby causing a Denial of Service (DoS). By repeatedly sending these sequences of packets to the device, an attacker can sustain the Denial of Service (DoS) condition. The device will abnormally shut down as a result of these sent packets. A potential indicator of compromise will be the following message in the log files: "eventd[13955]: SYSTEM_ABNORMAL_SHUTDOWN: System abnormally shut down" These issue are only triggered by traffic destined to the device. Transit traffic will not trigger these issues. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S19; 15.1 versions prior to 15.1R7-S10; 16.1 version 16.1R1 and later versions; 16.2 version 16.2R1 and later versions; 17.1 version 17.1R1 and later versions; 17.2 version 17.2R1 and later versions; 17.3 versions prior to 17.3R3-S12; 17.4 version 17.4R1 and later versions; 18.1 versions prior to 18.1R3-S13; 18.2 version 18.2R1 and later versions; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S9, 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S7, 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2; 21.2 versions prior to 21.2R1-S1, 21.2R2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Junos OS 存在缓冲区错误漏洞，该漏洞源于设备的TCP/IP堆栈中的缓冲区溢出漏洞允许攻击者向设备发送特定的数据包序列，从而导致拒绝服务。以下产品及版本受到影响：Junos OS 12.3, 15.1, 16.1, 16.2, 17.1, 17.2, 17.3, 18.1, 18.2, 18.3, 18
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 Junos OS 12.3 ~ 12.3R12-S19 -

II. Public POCs for CVE-2021-0283

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III. Intelligence Information for CVE-2021-0283

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Vendor Advisories for CVE-2021-0283 (1)

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

CVE-2021-0276 9.8 CRITICAL Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authenti
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-2021-0285 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: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-120

V. Comments for CVE-2021-0283

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