CVE-2020-9054— 多款ZyXEL产品 操作系统命令注入漏洞
一分钟漏洞结论
影响对象
ZyXEL NAS326
利用判断
已确认在野利用，应立即处置
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。
Zyxel NAS520是中国合勤（Zyxel）公司的一款NAS（网络附加存储）设备。 多款ZyXEL产品存在操作系统命令注入漏洞。远程攻击者可借助特制的HTTP POST或GET请求利用该漏洞执行任意代码。以下产品及版本受到影响：使用V5.21(AAZF.7)C0之前版本固件的NAS326；使用V5.21(AASZ.3)C0之前版本固件的NAS520；使用V5.21(AATB.4)C0之前版本固件的NAS540；使用V5.21(ABAG.4)C0之前版本固件的NAS542；ZyXEL NSA210；Zy
公开利用映射 1
Nuclei · 1
CVE-2020-9054.yaml [template]
已观察到在野利用
cisa_kev · confirmed
影响版本矩阵 13
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| ZyXEL | NAS326 | V5.21(AAZF.7)C0≤ V5.21(AAZF.7)C0 |
affected |
| ZyXEL | NAS520 | V5.21(AASZ.3)C0≤ V5.21(AASZ.3)C0 |
affected |
| ZyXEL | NAS540 | V5.21(AATB.4)C0≤ V5.21(AATB.4)C0 |
affected |
| ZyXEL | NAS542 | V5.21(ABAG.4)C0≤ V5.21(ABAG.4)C0 |
affected |
| ZyXEL | NSA210 | all |
affected |
| ZyXEL | NSA220 | all |
affected |
| ZyXEL | NSA220+ | all |
affected |
| ZyXEL | NSA221 | all |
affected |
| ZyXEL | NSA310 | V4.75(AALH.2)C0≤ V4.75(AALH.2)C0 |
affected |
| ZyXEL | NSA320 | all |
affected |
| ZyXEL | NSA320S | V4.75(AANV.2)C0≤ V4.75(AANV.2)C0 |
affected |
| ZyXEL | NSA325 | V4.81(AAAJ.1)C0≤ V4.81(AAAJ.1)C0 |
affected |
| ZyXEL | NSA325v2 | V4.81(AALS.1)C0≤ V4.81(AALS.1)C0 |
affected |
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一、 漏洞 CVE-2020-9054 基础信息
漏洞信息
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Vulnerability Title
ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi
来源: CVE Program / CVE List V5
Vulnerability Description
Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
来源: CVE Program / CVE List V5
Vulnerability Title
多款ZyXEL产品 操作系统命令注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Zyxel NAS520是中国合勤（Zyxel）公司的一款NAS（网络附加存储）设备。 多款ZyXEL产品存在操作系统命令注入漏洞。远程攻击者可借助特制的HTTP POST或GET请求利用该漏洞执行任意代码。以下产品及版本受到影响：使用V5.21(AAZF.7)C0之前版本固件的NAS326；使用V5.21(AASZ.3)C0之前版本固件的NAS520；使用V5.21(AATB.4)C0之前版本固件的NAS540；使用V5.21(ABAG.4)C0之前版本固件的NAS542；ZyXEL NSA210；Zy
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 |
|---|---|---|---|---|
| ZyXEL | NAS326 | V5.21(AAZF.7)C0 ~ V5.21(AAZF.7)C0 | - |
|
| ZyXEL | NAS520 | V5.21(AASZ.3)C0 ~ V5.21(AASZ.3)C0 | - |
|
| ZyXEL | NAS540 | V5.21(AATB.4)C0 ~ V5.21(AATB.4)C0 | - |
|
| ZyXEL | NAS542 | V5.21(ABAG.4)C0 ~ V5.21(ABAG.4)C0 | - |
|
| ZyXEL | NSA210 | all | - |
|
| ZyXEL | NSA220 | all | - |
|
| ZyXEL | NSA220+ | all | - |
|
| ZyXEL | NSA221 | all | - |
|
| ZyXEL | NSA310 | V4.75(AALH.2)C0 ~ V4.75(AALH.2)C0 | - |
|
| ZyXEL | NSA320 | all | - |
|
| ZyXEL | NSA320S | V4.75(AANV.2)C0 ~ V4.75(AANV.2)C0 | - |
|
| ZyXEL | NSA325 | V4.81(AAAJ.1)C0 ~ V4.81(AAAJ.1)C0 | - |
|
| ZyXEL | NSA325v2 | V4.81(AALS.1)C0 ~ V4.81(AALS.1)C0 | - |
|
二、漏洞 CVE-2020-9054 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | CVE-2020-9054 PoC for Zyxel | https://github.com/darrenmartyn/CVE-2020-9054 | POC详情 |
| 2 | Multiple Zyxel network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. Zyxel NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the Zyxel device. Although the web server does not run as the root user, Zyyxel devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable Zyyxel device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any Zyyxel device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 Zyyxel has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-9054.yaml | POC详情 |
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CVE-2020-9054 厂商安全公告 (3)
-
https://kb.cert.org/artifacts/cve-2020-9054.html x_refsource_MISC
-
CVE-2020-9054 新闻报道 (1)
CVE-2020-9054 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2020-9054
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