CVE-2021-0272— Juniper Networks Junos OS 安全漏洞
一分钟漏洞结论
影响对象
Juniper Networks Junos OS
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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 存在安全漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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一、 漏洞 CVE-2021-0272 基础信息
漏洞信息
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Vulnerability Title
Junos OS: QFX10002-32Q, QFX10002-60C, QFX10002-72Q, QFX10008, QFX10016: In EVPN-VXLAN scenarios receipt of specific genuine packets by an adjacent attacker will cause a kernel memory leak in FPC.
来源: CVE Program / CVE List V5
Vulnerability Description
A kernel memory leak in QFX10002-32Q, QFX10002-60C, QFX10002-72Q, QFX10008, QFX10016 devices Flexible PIC Concentrators (FPCs) on Juniper Networks Junos OS allows an attacker to send genuine packets destined to the device to cause a Denial of Service (DoS) to the device. On QFX10002-32Q, QFX10002-60C, QFX10002-72Q devices the device will crash and restart. On QFX10008, QFX10016 devices, depending on the number of FPCs involved in an attack, one more more FPCs may crash and traffic through the device may be degraded in other ways, until the attack traffic stops. A reboot is required to restore service and clear the kernel memory. Continued receipt and processing of these genuine packets will create a sustained Denial of Service (DoS) condition. On QFX10008, QFX10016 devices, an indicator of compromise may be the existence of DCPFE core files. You can also monitor PFE memory utilization for incremental growth: user@qfx-RE:0% cprod -A fpc0 -c "show heap 0" | grep -i ke 0 3788a1b0 3221225048 2417120656 804104392 24 Kernel user@qfx-RE:0% cprod -A fpc0 -c "show heap 0" | grep -i ke 0 3788a1b0 3221225048 2332332200 888892848 27 Kernel This issue affects: Juniper Networks Junos OS on QFX10002-32Q, QFX10002-60C, QFX10002-72Q, QFX10008, QFX10016: 16.1 versions 16.1R1 and above prior to 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R3-S2; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2. This issue does not affect releases prior to Junos OS 16.1R1. This issue does not affect EX Series devices. This issue does not affect Junos OS Evolved.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: 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)
来源: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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。 Junos OS 存在安全漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Juniper Networks | Junos OS | unspecified ~ 16.1R1 | - |
|
二、漏洞 CVE-2021-0272 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2021-0272 厂商安全公告 (2)
-
https://kb.juniper.net/KB32854 x_refsource_MISC
-
https://kb.juniper.net/JSA11163 x_refsource_MISC
同批安全公告 · Juniper Networks · 2021-04-22 · 共 53 条
| CVE-2021-0248 | 10.0 CRITICAL | Juniper Networks Junos OS 信任管理问题漏洞 |
| CVE-2021-0254 | 9.8 CRITICAL | Juniper Networks Junos OS 缓冲区错误漏洞 |
| CVE-2021-0275 | 8.8 HIGH | Juniper Networks Junos OS 跨站脚本漏洞 |
| CVE-2021-0268 | 8.8 HIGH | Juniper Networks Junos OS 注入漏洞 |
| CVE-2021-0269 | 8.8 HIGH | Juniper Networks Junos OS 安全漏洞 |
| CVE-2021-0251 | 8.6 HIGH | Juniper Networks Junos OS 代码问题漏洞 |
| CVE-2021-0249 | 8.1 HIGH | Juniper Networks Junos OS 安全漏洞 |
| CVE-2021-0266 | 8.1 HIGH | Juniper Networks Junos OS 信任管理问题漏洞 |
| CVE-2021-0265 | 8.1 HIGH | Juniper Networks AppFormix Overview 操作系统命令注入漏洞 |
| CVE-2021-0252 | 7.8 HIGH | Juniper Networks Junos OS 命令注入漏洞 |
| CVE-2021-0245 | 7.8 HIGH | Juniper Networks Junos OS 信任管理问题漏洞 |
| CVE-2021-0253 | 7.8 HIGH | Juniper Networks Junos OS 命令注入漏洞 |
| CVE-2021-0270 | 7.5 HIGH | Juniper Networks Junos OS 资源管理错误漏洞 |
| CVE-2021-0250 | 7.5 HIGH | Juniper Networks Junos OS 安全漏洞 |
| CVE-2021-0227 | 7.5 HIGH | Juniper Networks Junos OS 缓冲区错误漏洞 |
| CVE-2021-0233 | 7.5 HIGH | Juniper Networks Junos OS 资源管理错误漏洞 |
| CVE-2021-0261 | 7.5 HIGH | Juniper Networks Junos OS 安全漏洞 |
| CVE-2021-0230 | 7.5 HIGH | Juniper Networks Junos OS 资源管理错误漏洞 |
| CVE-2021-0244 | 7.4 HIGH | Juniper Networks Junos OS 竞争条件问题漏洞 |
| CVE-2021-0267 | 7.4 HIGH | Juniper Networks Junos OS和Junos OS Evolved 输入验证错误漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2021-0272
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