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

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之前版本存在信任管理问题漏洞。攻击者利用该漏洞执行任意代码。

AI Predicted 8.8 Difficulty: Moderate EPSS 1.17% · P66

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2022-26305

Vulnerability Information
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Vulnerability Title
Execution of Untrusted Macros Due to Improper Certificate Validation
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
LibreOffice 信任管理问题漏洞
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之前版本存在信任管理问题漏洞。攻击者利用该漏洞执行任意代码。
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-2022-26305

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III. Intelligence Information for CVE-2022-26305

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Mailing List Discussions for CVE-2022-26305 (1)

Other References for CVE-2022-26305 (1)

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

CVE-2022-26306 Execution of Untrusted Macros Due to Improper Certificate Validation
CVE-2022-26307 Weak Master Keys

IV. Related Vulnerabilities

Same product: LibreOffice
Same vendor: The Document Foundation
Same weakness: CWE-295

V. Comments for CVE-2022-26305

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