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CVE-2024-39511— Junos OS: The 802.1X Authentication Daemon crashes on running a specific command

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，该漏洞源于存在不正确的输入验证漏洞，允许具有CLI访问权限的本地低权限攻击者造成拒绝服务(DoS)。

CVSS 5.5 · Medium EPSS 0.15% · P3
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I. Basic Information for CVE-2024-39511

Vulnerability Information
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Vulnerability Title
Junos OS: The 802.1X Authentication Daemon crashes on running a specific command
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Input Validation vulnerability in the 802.1X Authentication (dot1x) Daemon of Juniper Networks Junos OS allows a local, low-privileged attacker with access to the CLI to cause a Denial of Service (DoS). On running a specific operational dot1x command, the dot1x daemon crashes. An attacker can cause a sustained DoS condition by running this command repeatedly. When the crash occurs, the authentication status of any 802.1x clients is cleared, and any authorized dot1x port becomes unauthorized. The client cannot re-authenticate until the dot1x daemon restarts. This issue affects Junos OS: * All versions before 20.4R3-S10; * 21.2 versions before 21.2R3-S7; * 21.4 versions before 21.4R3-S6; * 22.1 versions before 22.1R3-S5; * 22.2 versions before 22.2R3-S3; * 22.3 versions before 22.3R3-S2; * 22.4 versions before 22.4R3-S1; * 23.2 versions before 23.2R2.
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
输入验证不恰当
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，该漏洞源于存在不正确的输入验证漏洞，允许具有CLI访问权限的本地低权限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 0 ~ 20.4R3-S10 -

II. Public POCs for CVE-2024-39511

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III. Intelligence Information for CVE-2024-39511

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Other References for CVE-2024-39511 (1)

Same Patch Batch · Juniper Networks · 2024-07-10 · 15 CVEs total

CVE-2024-39518 7.5 HIGH Junos OS: MX240, MX480, MX960 platforms using MPC10E: Memory leak will be observed when su
CVE-2024-39562 7.5 HIGH Junos OS Evolved: A high rate of SSH connections causes a Denial of Service
CVE-2024-39555 7.5 HIGH Junos OS and Junos OS Evolved: Receipt of a specific malformed BGP update causes the sessi
CVE-2024-39512 6.6 MEDIUM Junos OS Evolved: User is not logged out when the console cable is disconnected
CVE-2024-39517 6.5 MEDIUM Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in device
CVE-2024-39514 6.5 MEDIUM Junos OS and Junos OS Evolved: Receiving specific traffic on devices with EVPN-VPWS with I
CVE-2024-39560 6.5 MEDIUM Junos OS and Junos OS Evolved: Memory leak due to RSVP neighbor persistent error leading t
CVE-2024-39558 6.5 MEDIUM Junos OS and Junos OS Evolved: Receipt of specific PIM packet causes rpd crash when PIM is
CVE-2024-39557 6.5 MEDIUM Junos OS Evolved: MAC table changes cause a memory leak
CVE-2024-39556 6.4 MEDIUM Junos OS and Junos OS Evolved: Loading a malicious certificate from the CLI may result in
CVE-2024-39559 5.9 MEDIUM Junos OS Evolved: Receipt of a specific TCP packet may result in a system crash (vmcore) o
CVE-2024-39554 5.9 MEDIUM Junos OS and Junos OS Evolved: BGP multipath incremental calculation is resulting in an rp
CVE-2024-39561 5.8 MEDIUM Junos OS: SRX4600, SRX5000 Series: TCP packets with SYN/FIN or SYN/RST are transferred aft
CVE-2024-39513 5.5 MEDIUM Junos OS Evolved: Execution of a specific CLI command will cause a crash in the AFT manage

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-20

V. Comments for CVE-2024-39511

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