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CVE-2021-31359— Junos OS and Junos OS Evolved: Local Privilege Escalation vulnerability

CVSS 7.8 · High EPSS 0.03% · P8
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I. Basic Information for CVE-2021-31359

Vulnerability Information
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Vulnerability Title
Junos OS and Junos OS Evolved: Local Privilege Escalation vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A local privilege escalation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to cause the Juniper DHCP daemon (jdhcpd) process to crash, resulting in a Denial of Service (DoS), or execute arbitrary commands as root. Continued processing of malicious input will repeatedly crash the system and sustain the Denial of Service (DoS) condition. Systems are only vulnerable if jdhcpd is running, which can be confirmed via the 'show system processes' command. For example: root@host# run show system processes extensive | match dhcp 26537 root -16 0 97568K 13692K RUN 0 0:01 3.71% jdhcpd This issue affects: Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 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-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 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. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 权限许可和访问控制问题漏洞
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。 Juniper Networks Junos OS 存在权限许可和访问控制问题漏洞，该漏洞源于瞻博网络 Junos OS 和 Junos OS Evolved 中的本地提权漏洞允许本地低权限用户导致瞻博网络 DHCP 守护进程 (jdhcpd) 进程崩溃，从而导致拒绝服务 (DoS)，或执行任意命令作为根。继
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

VendorProductAffected VersionsCPESubscribe
Juniper NetworksJunos OS 15.1 ~ 15.1R7-S10 -
Juniper NetworksJunos OS Evolved unspecified ~ 20.4R2-S3-EVO -

II. Public POCs for CVE-2021-31359

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III. Intelligence Information for CVE-2021-31359

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Same Patch Batch · Juniper Networks · 2021-10-19 · 42 CVEs total

CVE-2021-313499.8 CRITICALSession Smart Router: Authentication Bypass Vulnerability
CVE-2021-313858.8 HIGHJunos OS: J-Web: A path traversal vulnerability allows an authenticated attacker to elevat
CVE-2021-313728.8 HIGHJunos OS: J-Web allows a locally authenticated attacker to escalate their privileges to ro
CVE-2021-313558.0 HIGHJunos OS: Stored Cross-Site Scripting (XSS) vulnerability in captive portal
CVE-2021-313738.0 HIGHJunos OS: SRX Series: Persistent XSS vulnerability in J-Web
CVE-2021-313567.8 HIGHJunos OS Evolved: Multiple shell-injection vulnerabilities in EVO UI wrapper scripts
CVE-2021-313577.8 HIGHJunos OS Evolved: shell-injection vulnerabilities in evo_tcpdump UI wrapper script
CVE-2021-313587.8 HIGHJunos OS Evolved: shell-injection vulnerabilities in evo_sftp UI wrapper script
CVE-2021-313507.5 HIGHJunos OS and Junos OS Evolved: Privilege escalation vulnerability in Juniper Extension Too
CVE-2021-313517.5 HIGHJunos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset
CVE-2021-313797.5 HIGHJunos OS: MX Series: MPC 7/8/9/10/11 cards with MAP-E: PFE halts when an attacker sends ma
CVE-2021-313537.5 HIGHJunos OS and Junos OS Evolved: RPD core upon receipt of specific BGP update
CVE-2021-313767.5 HIGHJunos OS: ACX Series: Packet Forwarding Engine manager (FXPC) process crashes when process
CVE-2021-313747.5 HIGHJunos OS and Junos OS Evolved: RPD crash while processing a specially crafted BGP UPDATE o
CVE-2021-313837.5 HIGHJunos OS and Junos OS Evolved: In Point to MultiPoint (P2MP) scenarios receipt of various
CVE-2021-02997.5 HIGHJunos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet
CVE-2021-313687.5 HIGHJunos OS: EX2300 Series, EX3400 Series, and ACX710 might become unresponsive if the out-of
CVE-2021-02967.4 HIGHCTPView: HSTS not being enforced on CTPView server.
CVE-2021-313847.2 HIGHJunos OS: SRX Series: Under a specific device configuration an attacker can access the dev
CVE-2021-313757.2 HIGHJunos OS: Receipt of a specific BGP update may cause RPKI policy-checks to be bypassed

Showing top 20 of 42 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-269

V. Comments for CVE-2021-31359

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