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CVE-2024-21591— Junos OS: SRX Series and EX Series: Security Vulnerability in J-web allows a preAuth Remote Code Execution

Quick assessment

Affected
Juniper Networks Junos OS
Exploitation
High exploitation probability; assess promptly
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。 Juniper Networks Junos OS 存在安全漏洞，该漏洞源于存在越界写入漏洞允许。未经身份验证的基于网络的攻击者造成拒绝服务 (DoS) 或远程代码执行 (RCE) 并获取信息 设备上的 root 权限。

CVSS 9.8 · Critical EPSS 17.53% · P97
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I. Basic Information for CVE-2024-21591

Vulnerability Information
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Vulnerability Title
Junos OS: SRX Series and EX Series: Security Vulnerability in J-web allows a preAuth Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
An Out-of-bounds Write vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS), or Remote Code Execution (RCE) and obtain root privileges on the device. This issue is caused by use of an insecure function allowing an attacker to overwrite arbitrary memory. This issue affects Juniper Networks Junos OS SRX Series and EX Series: * Junos OS versions earlier than 20.4R3-S9; * Junos OS 21.2 versions earlier than 21.2R3-S7; * Junos OS 21.3 versions earlier than 21.3R3-S5; * Junos OS 21.4 versions earlier than 21.4R3-S5; * Junos OS 22.1 versions earlier than 22.1R3-S4; * Junos OS 22.2 versions earlier than 22.2R3-S3; * Junos OS 22.3 versions earlier than 22.3R3-S2; * Junos OS 22.4 versions earlier than 22.4R2-S2, 22.4R3.
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
跨界内存写
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。 Juniper Networks Junos OS 存在安全漏洞，该漏洞源于存在越界写入漏洞允许。未经身份验证的基于网络的攻击者造成拒绝服务 (DoS) 或远程代码执行 (RCE) 并获取信息 设备上的 root 权限。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks Junos OS 0 ~ 20.4R3-S9 -

II. Public POCs for CVE-2024-21591

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III. Intelligence Information for CVE-2024-21591

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Security Blog Posts for CVE-2024-21591 (1)

Other References for CVE-2024-21591 (2)

Same Patch Batch · Juniper Networks · 2024-01-12 · 23 CVEs total

CVE-2024-21616 7.5 HIGH Junos OS: MX Series and SRX Series: Processing of a specific SIP packet causes NAT IP allo
CVE-2024-21614 7.5 HIGH Junos OS and Junos OS Evolved: A specific query via DREND causes rpd crash
CVE-2024-21612 7.5 HIGH Junos OS Evolved: Specific TCP traffic causes OFP core and restart of RE
CVE-2024-21611 7.5 HIGH Junos OS and Junos OS Evolved: In a jflow scenario continuous route churn will cause a mem
CVE-2024-21606 7.5 HIGH Junos OS: SRX Series: When "tcp-encap" is configured and specific packets are received flo
CVE-2024-21604 7.5 HIGH Junos OS Evolved: A high rate of specific traffic will cause a complete system outage
CVE-2024-21602 7.5 HIGH Junos OS Evolved: ACX7024, ACX7100-32C and ACX7100-48L: Traffic stops when a specific IPv4
CVE-2024-21595 7.5 HIGH Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic wil
CVE-2024-21589 7.4 HIGH Paragon Active Assurance Control Center: Information disclosure vulnerability
CVE-2023-36842 6.5 MEDIUM Junos OS: jdhcpd will hang on receiving a specific DHCP packet
CVE-2024-21617 6.5 MEDIUM Junos OS: BGP flap on NSR-enabled devices causes memory leak
CVE-2024-21587 6.5 MEDIUM Junos OS: MX Series: Memory leak in bbe-smgd process if BFD liveness detection for DHCP su
CVE-2024-21599 6.5 MEDIUM Junos OS: MX Series: MPC3E memory leak with PTP configuration
CVE-2024-21600 6.5 MEDIUM Junos OS: PTX Series: In an FTI scenario MPLS packets hitting reject next-hop will cause a
CVE-2024-21603 6.5 MEDIUM Junos OS: MX Series: Gathering statistics in a scaled SCU/DCU configuration will lead to a
CVE-2024-21613 6.5 MEDIUM Junos OS and Junos OS Evolved: A link flap causes patroot memory leak which leads to rpd c
CVE-2024-21601 5.9 MEDIUM Junos OS: SRX Series: Due to an error in processing TCP events flowd will crash
CVE-2024-21585 5.9 MEDIUM Junos OS and Junos OS Evolved: BGP session flaps on NSR-enabled devices can cause rpd cras
CVE-2024-21594 5.5 MEDIUM Junos OS: SRX 5000 Series: Repeated execution of a specific CLI command causes a flowd cra
CVE-2024-21597 5.3 MEDIUM Junos OS: MX Series: In an AF scenario traffic can bypass configured lo0 firewall filters

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-787

V. Comments for CVE-2024-21591

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