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CVE-2023-28985— SRX Series and MX Series: An FPC core is observed when IDP is enabled on the device and a specific malformed SSL packet is received

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 SRX Series是美国瞻博网络（Juniper Networks）公司的一套SRX系列服务网关设备。 Juniper Networks SRX Series存在安全漏洞，该漏洞源于入侵检测和防御 (IDP) 中存在输入语法正确性验证不当，允许未经身份验证的网络攻击者造成拒绝服务 (DoS)。

CVSS 7.5 · High EPSS 0.63% · P47

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-28985

Vulnerability Information
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Vulnerability Title
SRX Series and MX Series: An FPC core is observed when IDP is enabled on the device and a specific malformed SSL packet is received
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Validation of Syntactic Correctness of Input vulnerability in Intrusion Detection and Prevention (IDP) of Juniper Networks SRX Series and MX Series allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). Continued receipt of this specific packet will cause a sustained Denial of Service condition. On all SRX Series and MX Series platforms, where IDP is enabled and a specific malformed SSL packet is received, the SSL detector crashes leading to an FPC core. This issue affects Juniper Networks SRX Series and MX Series prior to SigPack 3598. In order to identify the current SigPack version, following command can be used: user@junos# show security idp security-package-version
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1286
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks SRX Series 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks SRX Series是美国瞻博网络（Juniper Networks）公司的一套SRX系列服务网关设备。 Juniper Networks SRX Series存在安全漏洞，该漏洞源于入侵检测和防御 (IDP) 中存在输入语法正确性验证不当，允许未经身份验证的网络攻击者造成拒绝服务 (DoS)。
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 ~ SigPack 3598 -

II. Public POCs for CVE-2023-28985

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III. Intelligence Information for CVE-2023-28985

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Other References for CVE-2023-28985 (1)

Same Patch Batch · Juniper Networks · 2023-07-14 · 12 CVEs total

CVE-2023-36835 7.5 HIGH Junos OS: QFX10000 Series: All traffic will be dropped after a specific valid IP packet ha
CVE-2023-36832 7.5 HIGH Junos OS: MX Series: PFE crash upon receipt of specific packet destined to an AMS interfac
CVE-2023-36831 7.5 HIGH Junos OS: SRX Series: jbuf memory leak when SSL Proxy and UTM Web-Filtering is applied
CVE-2023-36850 6.5 MEDIUM Junos OS: MX Series: An MPC will crash upon receipt of a malformed CFM packet.
CVE-2023-36849 6.5 MEDIUM Junos OS and Junos OS Evolved: The l2cpd will crash when a malformed LLDP packet is receiv
CVE-2023-36848 6.5 MEDIUM Junos OS: MX Series: The FPC will crash on receiving a malformed CFM packet
CVE-2023-36834 6.5 MEDIUM Junos OS: SRX 4600 and SRX 5000 Series: The receipt of specific genuine packets by SRXes c
CVE-2023-36833 6.5 MEDIUM Junos OS Evolved: PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202: The af
CVE-2023-36840 5.5 MEDIUM Junos OS and Junos OS Evolved: An rpd crash occurs when a specific L2VPN command is run
CVE-2023-36838 5.5 MEDIUM Junos OS: SRX Series: A flowd core occurs when running a low privileged CLI command
CVE-2023-36836 4.7 MEDIUM Junos OS and Junos OS Evolved: In a MoFRR scenario an rpd core may be observed when a low

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-1286

V. Comments for CVE-2023-28985

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