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CVE-2023-22409— Junos OS: SRX Series, MX Series with SPC3: When an inconsistent NAT configuration exists and a specific CLI command is issued the SPC will reboot

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。 Juniper Networks Junos OS存在安全漏洞，该漏洞源于未检查循环条件，从而导致拒绝服务。以下产品及版本受到影响：Juniper Networks Junos OS 19.4R3-S10之前版本、20.1版本至20.1R1版本、20.2版本至20.2R3-S6之前版本、20.3版本至20.3

CVSS 5.5 · Medium EPSS 0.18% · P8
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I. Basic Information for CVE-2023-22409

Vulnerability Information
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Vulnerability Title
Junos OS: SRX Series, MX Series with SPC3: When an inconsistent NAT configuration exists and a specific CLI command is issued the SPC will reboot
Source: CVE Program / CVE List V5
Vulnerability Description
An Unchecked Input for Loop Condition vulnerability in a NAT library of Juniper Networks Junos OS allows a local authenticated attacker with low privileges to cause a Denial of Service (DoS). When an inconsistent "deterministic NAT" configuration is present on an SRX, or MX with SPC3 and then a specific CLI command is issued the SPC will crash and restart. Repeated execution of this command will lead to a sustained DoS. Such a configuration is characterized by the total number of port blocks being greater than the total number of hosts. An example for such configuration is: [ services nat source pool TEST-POOL address x.x.x.0/32 to x.x.x.15/32 ] [ services nat source pool TEST-POOL port deterministic block-size 1008 ] [ services nat source pool TEST-POOL port deterministic host address y.y.y.0/24] [ services nat source pool TEST-POOL port deterministic include-boundary-addresses] where according to the following calculation: 65536-1024=64512 (number of usable ports per IP address, implicit) 64512/1008=64 (number of port blocks per Nat IP) x.x.x.0/32 to x.x.x.15/32 = 16 (NAT IP addresses available in NAT pool) total port blocks in NAT Pool = 64 blocks per IP * 16 IPs = 1024 Port blocks host address y.y.y.0/24 = 256 hosts (with include-boundary-addresses) If the port block size is configured to be 4032, then the total port blocks are (64512/4032) * 16 = 256 which is equivalent to the total host addresses of 256, and the issue will not be seen. This issue affects Juniper Networks Junos OS on SRX Series, and MX Series with SPC3: All versions prior to 19.4R3-S10; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S1; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
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，该漏洞源于未检查循环条件，从而导致拒绝服务。以下产品及版本受到影响：Juniper Networks Junos OS 19.4R3-S10之前版本、20.1版本至20.1R1版本、20.2版本至20.2R3-S6之前版本、20.3版本至20.3
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 unspecified ~ 19.4R3-S10 -

II. Public POCs for CVE-2023-22409

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III. Intelligence Information for CVE-2023-22409

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Vendor Advisories for CVE-2023-22409 (1)

Same Patch Batch · Juniper Networks · 2023-01-12 · 26 CVEs total

CVE-2023-22393 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash upon receipt of BGP route with invalid next-hop
CVE-2023-22417 7.5 HIGH Junos OS: SRX Series: A memory leak might be observed in IPsec VPN scenario leading to an
CVE-2023-22416 7.5 HIGH Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash if SIP A
CVE-2023-22415 7.5 HIGH Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when spe
CVE-2023-22413 7.5 HIGH Junos OS: MX Series: The Multiservices PIC Management Daemon (mspmand) will crash when an
CVE-2023-22412 7.5 HIGH Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash if the S
CVE-2023-22411 7.5 HIGH Junos OS: SRX Series: The flow processing daemon (flowd) will crash when Unified Policies
CVE-2023-22410 7.5 HIGH Junos OS: MX Series with MPC10/MPC11: When Suspicious Control Flow Detection (scfd) is ena
CVE-2023-22408 7.5 HIGH Junos OS: SRX 5000 Series: Upon processing of a specific SIP packet an FPC can crash
CVE-2023-22403 7.5 HIGH Junos OS: QFX10K Series: An ICCP flap will be observed due to excessive specific traffic
CVE-2023-22401 7.5 HIGH Junos OS and Junos OS Evolved: PTX10008, PTX10016: When a specific SNMP MIB is queried the
CVE-2023-22400 7.5 HIGH Junos OS Evolved: A specific SNMP GET operation and a specific CLI commands cause resource
CVE-2023-22399 7.5 HIGH Junos OS: QFX10K Series: PFE crash upon receipt of specific genuine packets when sFlow is
CVE-2023-22396 7.5 HIGH Junos OS: Receipt of crafted TCP packets destined to the device results in MBUF leak leadi
CVE-2023-22394 7.5 HIGH Junos OS: SRX Series and MX Series: Memory leak due to receipt of specially crafted SIP ca
CVE-2023-22391 7.5 HIGH Junos OS: ACX2K Series: Receipt of a high rate of specific traffic will lead to a Denial o
CVE-2023-22404 6.5 MEDIUM Junos OS: SRX Series and MX Series with SPC3: When IPsec VPN is configured iked will core
CVE-2023-22405 6.5 MEDIUM Junos OS: QFX5k Series, EX46xx Series: MAC limiting feature stops working after PFE restar
CVE-2023-22406 6.5 MEDIUM Junos OS and Junos OS Evolved: A memory leak which will ultimately lead to an rpd crash wi
CVE-2023-22407 6.5 MEDIUM Junos OS and Junos OS Evolved: An RPD crash can happen due to an MPLS TE tunnel configurat

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks