Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2022-26307— Weak Master Keys

Quick assessment

Affected
The Document Foundation LibreOffice
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.

LibreOffice是文档基金会（The Document Foundation，tdf）的一套开源的办公软件套件。该产品包含Writer（文本文档）、Calc（电子表格）和Impress（演示文稿）等应用程序。 LibreOffice 7.2版本至7.2.7之前版本、7.3版本至7.3.1之前版本存在安全漏洞，该漏洞源于 LibreOffice 在用户配置数据库中对 Web 连接的主密钥编码不当，导致其熵从 128 位减弱到 43 位。攻击者利用该漏洞可以解开受害者密码。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.43% · P72

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2022-26307

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Weak Master Keys
Source: CVE Program / CVE List V5
Vulnerability Description
LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulerable to a brute force attack if an attacker has access to the users stored config. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.3.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的加密强度
Source: CVE Program / CVE List V5
Vulnerability Title
LibreOffice 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibreOffice是文档基金会（The Document Foundation，tdf）的一套开源的办公软件套件。该产品包含Writer（文本文档）、Calc（电子表格）和Impress（演示文稿）等应用程序。 LibreOffice 7.2版本至7.2.7之前版本、7.3版本至7.3.1之前版本存在安全漏洞，该漏洞源于 LibreOffice 在用户配置数据库中对 Web 连接的主密钥编码不当，导致其熵从 128 位减弱到 43 位。攻击者利用该漏洞可以解开受害者密码。
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
The Document Foundation LibreOffice 7.2 ~ 7.2.7 -

II. Public POCs for CVE-2022-26307

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2022-26307

请登录查看更多情报信息。

Mailing List Discussions for CVE-2022-26307 (2)

Other References for CVE-2022-26307 (1)

Same Patch Batch · The Document Foundation · 2022-07-25 · 3 CVEs total

CVE-2022-26305 Execution of Untrusted Macros Due to Improper Certificate Validation
CVE-2022-26306 Execution of Untrusted Macros Due to Improper Certificate Validation

IV. Related Vulnerabilities

Same product: LibreOffice
Same vendor: The Document Foundation
Same weakness: CWE-326

V. Comments for CVE-2022-26307

No comments yet

Leave a comment