CVE-2021-0239— Juniper Networks Junos OS 代码问题漏洞
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I. CVE-2021-0239の基本情報
脆弱性情報
脆弱性についてご質問がありますか？Shenlongの分析が参考になるかご確認ください！
Shenlongの10の質問を表示 ↗ 高度な大規模言語モデル技術を使用していますが、出力には不正確または古い情報が含まれる可能性があります。Shenlongはデータの正確性を確保するよう努めていますが、実際の状況に基づいて検証・判断してください。
脆弱性タイトル
Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames.
ソース: NVD (National Vulnerability Database)
脆弱性説明
In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions.
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
对因果或异常条件的不恰当检查
ソース: NVD (National Vulnerability Database)
脆弱性タイトル
Juniper Networks Junos OS 代码问题漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
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。 Junos OS 存在代码问题漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)
影響を受ける製品
| ベンダー | プロダクト | 影響を受けるバージョン | CPE | 購読 |
|---|---|---|---|---|
| Juniper Networks | Junos OS Evolved | unspecified ~ 20.4R1-EVO | - |
II. CVE-2021-0239の公開POC
| # | POC説明 | ソースリンク | Shenlongリンク |
|---|
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CVE-2021-0239 厂商安全公告 (1)
- https://kb.juniper.net/JSA11134x_refsource_MISC
Same Patch Batch · Juniper Networks · 2021-04-22 · 53 CVEs total
| CVE-2021-0248 | 10.0 CRITICAL | NFX Series: Hard-coded credentials allow an attacker to take control of any instance throu |
| CVE-2021-0254 | 9.8 CRITICAL | Junos OS: Remote code execution vulnerability in overlayd service |
| CVE-2021-0275 | 8.8 HIGH | Junos OS: J-Web: Cross-site scripting attack allows an attacker to gain control of another |
| CVE-2021-0268 | 8.8 HIGH | Junos OS: J-Web has an Improper Neutralization of CRLF Sequences in its HTTP Headers which |
| CVE-2021-0269 | 8.8 HIGH | Junos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution |
| CVE-2021-0251 | 8.6 HIGH | Junos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services s |
| CVE-2021-0249 | 8.1 HIGH | Junos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbi |
| CVE-2021-0266 | 8.1 HIGH | cSRX: Use of Hard-coded Cryptographic Keys allows an attacker to take control of the devic |
| CVE-2021-0265 | 8.1 HIGH | Contrail Insights: The REST API implementation allows an unauthenticated remote attacker t |
| CVE-2021-0252 | 7.8 HIGH | Junos OS: NFX Series: Local Code Execution Vulnerability in JDMD Leads to Privilege Escala |
| CVE-2021-0245 | 7.8 HIGH | Junos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authe |
| CVE-2021-0253 | 7.8 HIGH | Junos OS: NFX Series: Local Command Execution Vulnerability in JDMD Leads to Privilege Esc |
| CVE-2021-0270 | 7.5 HIGH | Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inli |
| CVE-2021-0227 | 7.5 HIGH | Junos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets |
| CVE-2021-0233 | 7.5 HIGH | Junos OS: ACX500 Series, ACX4000 Series: Denial of Service due to FFEB crash while process |
| CVE-2021-0230 | 7.5 HIGH | Junos OS: SRX Series: Memory leak when querying Aggregated Ethernet (AE) interface statist |
| CVE-2021-0250 | 7.5 HIGH | Junos OS and Junos OS Evolved: An attacker sending a specific crafted BGP update message w |
| CVE-2021-0261 | 7.5 HIGH | Junos OS: Denial of Service vulnerability in J-Web and web based (HTTP/HTTPS) services cau |
| CVE-2021-0267 | 7.4 HIGH | Junos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core. |
| CVE-2021-0240 | 7.4 HIGH | Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash and restart. |
Showing 20 of 53 CVEs. View all on vendor page →
IV. 関連脆弱性
同じ製品: Junos OS Evolved
- CVE-2026-33783
Junos OS Evolved: PTX Series: If SRTE tunnels provisioned vi - CVE-2026-33788
Junos OS Evolved: Local, authenticated attacker can gain pri - CVE-2025-59969
Junos OS Evolved: QFX5000 Series and PTX Series: An attacker - CVE-2026-21902
Junos OS Evolved: PTX Series: A vulnerability allows a unaut - CVE-2026-21911
Junos OS Evolved: Flapping management interface causes MAC l
同じベンダー: 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
同じ弱点: CWE-754
- CVE-2026-47216
Typesense: Unauthenticated Denial of Service in the Typesens - CVE-2026-0269
PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing - CVE-2026-46541
Nimiq network-libp2p: DHT query poisoning via first-record v - CVE-2026-5343
SAML SSO - Service Provider - Critical - Authentication byp - CVE-2025-13392
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V. CVE-2021-0239へのコメント
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