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CVE-2020-8515

Quick assessment

Affected
n/a n/a
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Draytek Vigor2960和Vigor300B都是中国台湾居易科技（Draytek）公司的产品。Vigor2960是一款负载平衡路由器和VPN网关设备。Vigor300B是一款负载均衡路由器。 DrayTek Vigor2960、Vigor3900和Vigor300B中存在操作系统命令注入漏洞。攻击者可通过向cgi-bin/mainfunction.cgi URI发送shell元字符利用该漏洞不经过身份验证以root权限执行代码。以下产品及版本受到影响：DrayTek Vigor2960 1.3.

AI Predicted 10.0 Difficulty: Trivial KEV EPSS 99.99% · P100

Public Exploits 2

ExploitDB · 1 EDB-48268 [remote]
Nuclei · 1 CVE-2020-8515.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-8515

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Draytek Vigor2960和Vigor300B 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Draytek Vigor2960和Vigor300B都是中国台湾居易科技（Draytek）公司的产品。Vigor2960是一款负载平衡路由器和VPN网关设备。Vigor300B是一款负载均衡路由器。 DrayTek Vigor2960、Vigor3900和Vigor300B中存在操作系统命令注入漏洞。攻击者可通过向cgi-bin/mainfunction.cgi URI发送shell元字符利用该漏洞不经过身份验证以root权限执行代码。以下产品及版本受到影响：DrayTek Vigor2960 1.3.
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2020-8515

# POC Description Source Link Shenlong Link
1 CVE-2020-8515-PoC https://github.com/imjdl/CVE-2020-8515-PoC POC Details
2 nmap script to detect CVE-2020-8515 on Draytek Devices https://github.com/truerandom/nmap_draytek_rce POC Details
3 Draytek CVE-2020-8515 PoC https://github.com/darrenmartyn/CVE-2020-8515 POC Details
4 DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-8515.yaml POC Details
5 None https://github.com/Threekiii/Awesome-POC/blob/master/%E7%BD%91%E7%BB%9C%E8%AE%BE%E5%A4%87%E6%BC%8F%E6%B4%9E/DrayTek%E4%BC%81%E4%B8%9A%E7%BD%91%E7%BB%9C%E8%AE%BE%E5%A4%87%20%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%20CVE-2020-8515.md POC Details
6 None https://github.com/chaitin/xray-plugins/blob/main/poc/manual/draytek-cve-2020-8515.yml POC Details
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III. Intelligence Information for CVE-2020-8515

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Exploits & Public PoCs for CVE-2020-8515 (1)

Other References for CVE-2020-8515 (2)

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2020-8515

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