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CVE-2023-44195— Junos OS Evolved: Packets which are not destined to the router can reach the RE

Quick assessment

Affected
Juniper Networks Junos OS Evolved
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 Evolved是美国瞻博网络（Juniper Networks）公司的Junos OS 的升级版系统。 Juniper Networks Junos OS Evolved 存在安全漏洞，该漏洞源于 NetworkStack 代理守护进程 (nsagentd) 中存在对预期端点的通信通道不当限制漏洞，允许未经身份验证的网络攻击者对系统的可用性造成有限的影响。

CVSS 5.4 · Medium EPSS 0.40% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-44195

Vulnerability Information
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Vulnerability Title
Junos OS Evolved: Packets which are not destined to the router can reach the RE
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system. If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access. CVE-2023-44196 is a prerequisite for this issue. This issue affects Juniper Networks Junos OS Evolved: * 21.3-EVO versions prior to 21.3R3-S5-EVO; * 21.4-EVO versions prior to 21.4R3-S4-EVO; * 22.1-EVO version 22.1R1-EVO and later; * 22.2-EVO version 22.2R1-EVO and later; * 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; * 22.4-EVO versions prior to 22.4R3-EVO. This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通信信道对预期端点的不适当限制
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS Evolved 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS Evolved是美国瞻博网络（Juniper Networks）公司的Junos OS 的升级版系统。 Juniper Networks Junos OS Evolved 存在安全漏洞，该漏洞源于 NetworkStack 代理守护进程 (nsagentd) 中存在对预期端点的通信通道不当限制漏洞，允许未经身份验证的网络攻击者对系统的可用性造成有限的影响。
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 Evolved 21.3-EVO ~ 21.3R3-S5-EVO -

II. Public POCs for CVE-2023-44195

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III. Intelligence Information for CVE-2023-44195

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Other References for CVE-2023-44195 (1)

Same Patch Batch · Juniper Networks · 2023-10-12 · 25 CVEs total

CVE-2023-44194 8.4 HIGH Junos OS: An unauthenticated attacker with local access to the device can create a backdoo
CVE-2023-44199 7.5 HIGH Junos OS: MX Series: In a PTP scenario a prolonged routing protocol churn can trigger an F
CVE-2023-36841 7.5 HIGH Junos OS: MX Series: Receipt of malformed TCP traffic will cause a Denial of Service
CVE-2023-44197 7.5 HIGH Junos OS and Junos OS Evolved: An rpd crash may occur when BGP is processing newly learned
CVE-2023-36843 7.5 HIGH Junos OS: SRX Series: The PFE will crash on receiving malformed SSL traffic when Sky ATP i
CVE-2023-44192 7.5 HIGH Junos OS: QFX5000 Series: DMA memory leak is observed when specific DHCP packets are trans
CVE-2023-44191 7.5 HIGH Junos OS: QFX5000 Series and EX4000 Series: Denial of Service (DoS) on a large scale VLAN
CVE-2023-44185 7.5 HIGH Junos OS and Junos OS Evolved: In an BGP scenario RPD crashes upon receiving and processin
CVE-2023-44181 7.5 HIGH Junos OS: QFX5k: l2 loop in the overlay impacts the stability in a EVPN/VXLAN environment
CVE-2023-44182 7.3 HIGH Junos OS and Junos OS Evolved: An Unchecked Return Value in multiple users interfaces affe
CVE-2023-44184 6.5 MEDIUM Junos OS and Junos OS Evolved: High CPU load due to specific NETCONF command
CVE-2023-22392 6.5 MEDIUM Junos OS: PTX Series and QFX10000 Series: Received flow-routes which aren't installed as t
CVE-2023-36839 6.5 MEDIUM Junos OS and Junos OS Evolved: An l2cpd crash will occur when specific LLDP packets are re
CVE-2023-44175 6.5 MEDIUM Junos OS and Junos OS Evolved: Receipt of a specific genuine PIM packet causes RPD crash
CVE-2023-44183 6.5 MEDIUM Junos OS: QFX5000 Series, EX4600 Series: In a VxLAN scenario an adjacent attacker within t
CVE-2023-44204 6.5 MEDIUM Junos OS and Junos OS Evolved: The rpd will crash upon receiving a malformed BGP UPDATE me
CVE-2023-44196 6.5 MEDIUM Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach
CVE-2023-44203 6.5 MEDIUM Junos OS: QFX5000 Series, EX2300, EX3400, EX4100, EX4400 and EX4600: Packet flooding will
CVE-2023-44198 5.8 MEDIUM Junos OS: SRX Series and MX Series: SIP ALG doesn't drop specifically malformed retransmit
CVE-2023-44178 5.5 MEDIUM Junos OS : Stack overflow vulnerability in CLI command processing

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS Evolved
Same vendor: Juniper Networks
Same weakness: CWE-923

V. Comments for CVE-2023-44195

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