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CVE-2021-20247

Quick assessment

Affected
n/a isync/mbsync
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.

Sourceforge mbsync是美国Sourceforge社区的一个应用软件。提供同步远程IMAP邮箱和本地maildir样式的邮箱 mbsync v1.3.5 版本之前和 v1.4.1 版本之前存在路径遍历漏洞，该漏洞源于允许恶意或受攻击的服务器使用特殊制作的邮箱名。

AI Predicted 7.5 Difficulty: Easy EPSS 1.88% · P78

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-20247

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur allowing a malicious or compromised server to use specially crafted mailbox names containing '..' path components to access data outside the designated mailbox on the opposite end of the synchronization channel. The highest threat from this vulnerability is to data confidentiality and integrity.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sourceforge mbsync 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sourceforge mbsync是美国Sourceforge社区的一个应用软件。提供同步远程IMAP邮箱和本地maildir样式的邮箱 mbsync v1.3.5 版本之前和 v1.4.1 版本之前存在路径遍历漏洞，该漏洞源于允许恶意或受攻击的服务器使用特殊制作的邮箱名。
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
- isync/mbsync before 1.35 -

II. Public POCs for CVE-2021-20247

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III. Intelligence Information for CVE-2021-20247

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Vendor Advisories for CVE-2021-20247 (1)

Mailing List Discussions for CVE-2021-20247 (4)

Same Patch Batch · n/a · 2021-02-23 · 56 CVEs total

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CVE-2021-26679 Aruba ClearPass Policy Manager 命令注入漏洞
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CVE-2021-27582 MITREid Connect 安全漏洞
CVE-2021-26678 Aruba ClearPass Policy Manager Prior 跨站脚本漏洞
CVE-2021-22651 Luxion KeyShot 路径遍历漏洞
CVE-2021-20198 Red Hat OpenShift Container Platform 访问控制错误漏洞
CVE-2021-26926 JasPer 缓冲区错误漏洞

Showing top 20 of 56 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-20

V. Comments for CVE-2021-20247

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