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CVE-2020-24439— Acrobat Reader DC for macOS Signature Validation Bypass

Quick assessment

Affected
Adobe Acrobat Reader
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.

Adobe Reader是美国奥多比（Adobe）公司的一款PDF文档阅读移动应用程序。 Adobe Acrobat Reader 中存在数据伪造问题漏洞，攻击者可通过绕过签名验证发起攻击。

CVSS 2.8 · Low EPSS 0.64% · P49

Possible ATT&CK Techniques 1 AI

T1548.002 · Bypass User Account Control
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I. Basic Information for CVE-2020-24439

Vulnerability Information
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Vulnerability Title
Acrobat Reader DC for macOS Signature Validation Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Acrobat Reader DC for macOS versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a security feature bypass. While the practical security impact is minimal, a defense-in-depth fix has been implemented to further harden the Adobe Reader update process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Adobe Reader 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Reader是美国奥多比（Adobe）公司的一款PDF文档阅读移动应用程序。 Adobe Acrobat Reader 中存在数据伪造问题漏洞，攻击者可通过绕过签名验证发起攻击。
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
Adobe Acrobat Reader unspecified ~ 2017.011.30175 -

II. Public POCs for CVE-2020-24439

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III. Intelligence Information for CVE-2020-24439

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Vendor Advisories for CVE-2020-24439 (1)

Same Patch Batch · Adobe · 2020-11-05 · 14 CVEs total

CVE-2020-24437 7.8 HIGH Acrobat Reader DC Use-After-Free Vulnerability Could Lead to Arbitrary Code Execution
CVE-2020-24430 7.8 HIGH Acrobat Pro DC Use-After-Free vulnerability Could Lead to Arbitrary Code Execution
CVE-2020-24435 7.8 HIGH Acrobat Reader DC Heap-based Buffer Overflow Could Lead to Arbitrary Code Execution
CVE-2020-24433 7.8 HIGH Adobe Acrobat Reader DC Local Privilege Escalation via Installer Component
CVE-2020-24436 7.8 HIGH Acrobat Pro DC PDF Export Out-Of-Bounds Write Vulnerability Could Lead to Arbitrary Code E
CVE-2020-24428 7.7 HIGH Acrobat Reader DC for macOS Race Condition Vulnerability Could Lead to Privilege Escalatio
CVE-2020-24429 7.7 HIGH Acrobat Reader DC for macOS Signature Verification Bypass Could Lead to Privilege Escalati
CVE-2020-24432 6.7 MEDIUM Acrobat Reader DC Arbitrary JavaScript Execution in PDF Documents
CVE-2020-24431 4.4 MEDIUM Acrobat Reader DC for macOS Dynamic Library Injection Vulnerability
CVE-2020-24426 3.3 LOW Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability
CVE-2020-24427 3.3 LOW Acrobat Reader DC Codec Input Validation Vulnerability Could Lead to Information Disclosur
CVE-2020-24434 3.3 LOW Acrobat Pro DC Out-Of-Bounds Read Vulnerability Could Lead to Information Disclosure
CVE-2020-24438 3.3 LOW Acrobat Reader DC Use-After-Free Vulnerability Could Lead to Information Disclosure

IV. Related Vulnerabilities

Same product: Acrobat Reader
Same vendor: Adobe
Same weakness: CWE-347

V. Comments for CVE-2020-24439

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