CVE-2024-39511— Junos OS: The 802.1X Authentication Daemon crashes on running a specific command
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
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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|---|
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- https://supportportal.juniper.net/JSA82976vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2024-39511
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
- CVE-2026-33791
Junos OS and Junos OS Evolved: Execution of crafted CLI comm - CVE-2026-33790
Junos OS: SRX Series: In a NAT64 configuration, receipt of a - CVE-2026-33787
Junos OS: SRX1500, SRX4100, SRX4200, SRX4600: When a specifi - CVE-2026-33785
Junos OS: MX Series: Missing Authorization for specific 'req - CVE-2026-33781
Junos OS: EX Series, QFX Series: In a VXLAN scenario when sp
Same vendor: Juniper Networks
- CVE-2026-33791
Junos OS and Junos OS Evolved: Execution of crafted CLI comm - CVE-2026-33790
Junos OS: SRX Series: In a NAT64 configuration, receipt of a - CVE-2026-33787
Junos OS: SRX1500, SRX4100, SRX4200, SRX4600: When a specifi - CVE-2026-33785
Junos OS: MX Series: Missing Authorization for specific 'req - CVE-2026-33784
JSI Virtual Lightweight Collector: Default password is not r
Same weakness: CWE-20
V. Comments for CVE-2024-39511
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