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CVE-2022-22204— Junos OS: MX Series and SRX Series: When receiving a specific SIP packets stale call table entries are created which eventually leads to a DoS for all SIP traffic

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。攻击者利用该漏洞通过SIP Packets导致 Junos OS 的致命错误，从而触发拒绝服务。

CVSS 5.3 · Medium EPSS 0.70% · P51

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-22204

Vulnerability Information
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Vulnerability Title
Junos OS: MX Series and SRX Series: When receiving a specific SIP packets stale call table entries are created which eventually leads to a DoS for all SIP traffic
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Release of Memory Before Removing Last Reference vulnerability in the Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Juniper Networks Junos OS allows unauthenticated network-based attacker to cause a partial Denial of Service (DoS). On all MX and SRX platforms, if the SIP ALG is enabled, receipt of a specific SIP packet will create a stale SIP entry. Sustained receipt of such packets will cause the SIP call table to eventually fill up and cause a DoS for all SIP traffic. The SIP call usage can be monitored by "show security alg sip calls". To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration. Please verify on SRX with: user@host> show security alg status | match sip SIP : Enabled Please verify on MX whether the following is configured: [ services ... rule <rule-name> (term <term-name>) from/match application/application-set <name> ] where either a. name = junos-sip or an application or application-set refers to SIP: b. [ applications application <name> application-protocol sip ] or c. [ applications application-set <name> application junos-sip ] This issue affects Juniper Networks Junos OS on SRX Series and MX Series: 20.4 versions prior to 20.4R3-S2; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R2-S2; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1. Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
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。攻击者利用该漏洞通过SIP Packets导致 Junos OS 的致命错误，从而触发拒绝服务。
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 ~ 20.4R1 -

II. Public POCs for CVE-2022-22204

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III. Intelligence Information for CVE-2022-22204

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Same Patch Batch · Juniper Networks · 2022-07-20 · 15 CVEs total

CVE-2022-22221 7.8 HIGH Junos OS: SRX and EX Series: Local privilege escalation flaw in "download" functionality
CVE-2022-22205 7.5 HIGH Junos OS: SRX Series: An FPC memory leak can occur in an APBR scenario
CVE-2022-22206 7.5 HIGH Junos OS: SRX series: The PFE will crash when specific traffic is scanned by Enhanced Web
CVE-2022-22207 7.5 HIGH Junos OS: MX Series with MPC11: In a GNF / node slicing scenario gathering AF interface st
CVE-2022-22209 7.5 HIGH Junos OS: RIB and PFEs can get out of sync due to a memory leak caused by interface flaps
CVE-2022-22212 7.5 HIGH Junos OS Evolved: A high rate of specific hostbound traffic will cause unexpected hostboun
CVE-2022-22202 6.5 MEDIUM Junos OS: PTX Series: FPCs may restart unexpectedly upon receipt of specific MPLS packets
CVE-2022-22203 6.5 MEDIUM Junos OS: EX4600 Series and QFX5000 Series: Receipt of specific traffic will lead to an fx
CVE-2022-22210 6.5 MEDIUM Junos OS: QFX5000 Series and MX Series: An l2alm crash leading to an FPC crash can be obse
CVE-2022-22214 6.5 MEDIUM Junos OS and Junos OS Evolved: In an MPLS scenario upon receipt of a specific IPv6 packet
CVE-2022-22215 6.5 MEDIUM Junos OS and Junos OS Evolved: /var/run/<pid>.env files are potentially not deleted during
CVE-2022-22217 6.1 MEDIUM Junos OS: QFX10K Series: Denial of Service (DoS) upon receipt of crafted MLD packets on mu
CVE-2022-22213 5.9 MEDIUM Junos OS and Junos OS Evolved: Denial of Service (DoS) vulnerability in RPD upon receipt o
CVE-2022-22216 4.3 MEDIUM Junos OS: PTX Series and QFX10000 Series: 'Etherleak' memory disclosure in Ethernet paddin

IV. Related Vulnerabilities

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

V. Comments for CVE-2022-22204

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