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CVE-2021-0293— Juniper Networks Junos OS 安全漏洞

CVSS 5.5 · Medium EPSS 0.25% · P16
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一、 漏洞 CVE-2021-0293 基础信息

漏洞信息
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Vulnerability Title
Junos OS: Out-of-memory condition and crashes can occur after executing a certain CLI command repeatedly
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
A vulnerability in Juniper Networks Junos OS caused by Missing Release of Memory after Effective Lifetime leads to a memory leak each time the CLI command 'show system connections extensive' is executed. The amount of memory leaked on each execution depends on the number of TCP connections from and to the system. Repeated execution will cause more memory to leak and eventually daemons that need to allocate additionally memory and ultimately the kernel to crash, which will result in traffic loss. Continued execution of this command will cause a sustained Denial of Service (DoS) condition. An administrator can use the following CLI command to monitor for increase in memory consumption of the netstat process, if it exists: user@junos> show system processes extensive | match "username|netstat" PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND 21181 root 100 0 5458M 4913M CPU3 2 0:59 97.27% netstat The following log message might be observed if this issue happens: kernel: %KERN-3: pid 21181 (netstat), uid 0, was killed: out of swap space This issue affects Juniper Networks Junos OS 18.2 versions prior to 18.2R2-S8, 18.2R3-S7. 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S7; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S1; 19.4 versions prior to 19.4R1-S4, 19.4R2-S3, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2; This issue does not affect Juniper Networks Junos OS versions prior to 18.2R1.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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存在安全漏洞，目前暂无该漏洞的详细信息，详情请关注厂商主页。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商产品影响版本CPE订阅
Juniper NetworksJunos OS unspecified ~ 18.2R1 -

二、漏洞 CVE-2021-0293 的公开POC

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三、漏洞 CVE-2021-0293 的情报信息

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同批安全公告 · Juniper Networks · 2021-07-15 · 共 19 条

CVE-2021-02769.8 CRITICALJuniper Networks SBR Carrier 缓冲区错误漏洞
CVE-2021-02778.8 HIGHJuniper Networks Junos OS 和 Junos OS Evolved 缓冲区错误漏洞
CVE-2021-02788.8 HIGHJuniper Networks Junos OS 输入验证错误漏洞
CVE-2021-02798.6 HIGHJuniper Networks Contrail Cloud 信任管理问题漏洞
CVE-2021-02857.5 HIGHJuniper Networks Networks Junos OS SRX 资源管理错误漏洞
CVE-2021-02807.5 HIGHJuniper Networks Junos OS 安全漏洞
CVE-2021-02827.5 HIGHJuniper Networks Junos OS 代码问题漏洞
CVE-2021-02837.5 HIGHJuniper Networks Junos OS 缓冲区错误漏洞
CVE-2021-02867.5 HIGHJuniper Networks Junos OS代码问题漏洞
CVE-2021-02876.5 MEDIUMJuniper Networks Junos OS Evolved 代码问题漏洞
CVE-2021-02886.5 MEDIUMJuniper Networks Junos OS 代码问题漏洞
CVE-2021-02896.5 MEDIUMJuniper Networks Junos OS 安全漏洞
CVE-2021-02906.5 MEDIUMJuniper Networks Junos OS 安全漏洞
CVE-2021-02916.5 MEDIUMJuniper Networks Junos OS 信息泄露漏洞
CVE-2021-02926.5 MEDIUMJuniper Networks Junos OS Evolved 资源管理错误漏洞
CVE-2021-02956.1 MEDIUMJuniper Networks Junos OS 安全漏洞
CVE-2021-02815.9 MEDIUMJuniper Networks Junos OS 代码问题漏洞
CVE-2021-02945.3 MEDIUMJuniper Networks Junos OS 安全漏洞

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-401

V. Comments for CVE-2021-0293

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