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CVE-2020-7247

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.

Openbsd Opensmtpd是Openbsd组织的一个基于RFC 5321的SMTP服务端软件。 Openbsd Opensmtpd 存在代码问题漏洞。远程攻击者可通过特制的SMTP session利用该漏洞以root权限执行任意命令。

AI Predicted 9.8 Difficulty: Easy KEV EPSS 98.97% · P100

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-7247

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.
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
Openbsd Opensmtpd代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Openbsd Opensmtpd是Openbsd组织的一个基于RFC 5321的SMTP服务端软件。 Openbsd Opensmtpd 存在代码问题漏洞。远程攻击者可通过特制的SMTP session利用该漏洞以root权限执行任意命令。
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-2020-7247

# POC Description Source Link Shenlong Link
1 Python exploit of cve-2020-7247 https://github.com/FiroSolutions/cve-2020-7247-exploit POC Details
2 OpenSMTPD version 6.6.2 remote code execution exploit https://github.com/superzerosec/cve-2020-7247 POC Details
3 Proof Of Concept Exploit for CVE-2020-7247 (Remote Execution on OpenSMTPD < 6.6.2 https://github.com/r0lh/CVE-2020-7247 POC Details
4 OpenSMTPD 6.4.0 - 6.6.1 Remote Code Execution PoC exploit https://github.com/QTranspose/CVE-2020-7247-exploit POC Details
5 This vulnerability exists in OpenBSD’s mail server OpenSMTPD’s “smtp_mailaddr()” function, and affects OpenBSD version 6.6. This allows an attacker to execute arbitrary shell commands like “sleep 66” as root user https://github.com/bytescrappers/CVE-2020-7247 POC Details
6 PoC exploit for CVE-2020-7247 OpenSMTPD 6.4.0 < 6.6.1 Remote Code Execution https://github.com/f4T1H21/CVE-2020-7247 POC Details
7 Proof of concept for CVE-2020-7247 for educational purposes. https://github.com/SimonSchoeni/CVE-2020-7247-POC POC Details
8 Worm written in python, abuses CVE-2020-7247 https://github.com/presentdaypresenttime/shai_hulud POC Details
9 CVE-2020-7247 Remote Code Execution POC https://github.com/gatariee/CVE-2020-7247 POC Details
10 None https://github.com/minhluannguyen/CVE-2020-7247-reproducer POC Details
11 OpenSMTPD versions 6.4.0 - 6.6.1 are susceptible to remote code execution. smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation. https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2020/CVE-2020-7247.yaml POC Details
12 None https://github.com/Threekiii/Awesome-POC/blob/master/%E4%B8%AD%E9%97%B4%E4%BB%B6%E6%BC%8F%E6%B4%9E/OpenSMTPD%20%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E%20CVE-2020-7247.md POC Details
13 https://github.com/vulhub/vulhub/blob/master/opensmtpd/CVE-2020-7247/README.md POC Details
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III. Intelligence Information for CVE-2020-7247

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Patches & Fixes for CVE-2020-7247 (1)

Vendor Advisories for CVE-2020-7247 (1)

Exploits & Public PoCs for CVE-2020-7247 (4)

Mailing List Discussions for CVE-2020-7247 (4)

Other References for CVE-2020-7247 (1)

Same Patch Batch · n/a · 2020-01-29 · 28 CVEs total

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CVE-2020-8416 BearFTP 资源管理错误漏洞
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CVE-2020-8438 Ruckus ZoneFlex R500 操作系统命令注入漏洞
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CVE-2013-2572 多款TP-LINK产品信任管理问题漏洞
CVE-2013-2573 TP-LINK IP Cameras TL-SC 3130G、3171G和4171G 操作系统命令注入漏洞
CVE-2020-8432 Das U-Boot 资源管理错误漏洞
CVE-2013-2574 FOSCAM IP-Camera 安全漏洞

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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

V. Comments for CVE-2020-7247

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