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CVE-2020-35680

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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。 OpenSMTPD 6.8.0p1之前版本存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞造成拒绝服务(NULL指针和守护进程崩溃)通过一个精心设计的客户活动模式, 因为filter state machine不正常维护IO通道之间的SMTP引擎和过滤层。

AI Predicted 5.3 Difficulty: Easy EPSS 3.65% · P89

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-35680

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.
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。 OpenSMTPD 6.8.0p1之前版本存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞造成拒绝服务(NULL指针和守护进程崩溃)通过一个精心设计的客户活动模式, 因为filter state machine不正常维护IO通道之间的SMTP引擎和过滤层。
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)

Affected Products

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

II. Public POCs for CVE-2020-35680

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III. Intelligence Information for CVE-2020-35680

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Patches & Fixes for CVE-2020-35680 (1)

Vendor Advisories for CVE-2020-35680 (1)

Mailing List Discussions for CVE-2020-35680 (3)

Security Blog Posts for CVE-2020-35680 (1)

Same Patch Batch · n/a · 2020-12-24 · 44 CVEs total

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CVE-2020-27720 F5 BIG-IP LTM/CGNAT 安全漏洞
CVE-2020-27722 F5 GE APM 资源管理错误漏洞
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CVE-2020-27714 F5 BIG-IP AFM 安全漏洞

Showing top 20 of 44 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

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