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CVE-2021-35985— Adobe Acrobat Pro DC PDFLibTool Null Pointer Dereference Bug

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 Acrobat是美国奥多比（Adobe）公司的一套PDF文件编辑和转换工具。 Adobe Acrobat 存在代码问题漏洞，该漏洞源于NULL指针解引用错误。攻击者可利用该漏洞欺骗受害者打开专门制作的文件，并执行拒绝服务(DoS)攻击。

CVSS 5.5 · Medium EPSS 1.91% · P78

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-35985

Vulnerability Information
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Vulnerability Title
Adobe Acrobat Pro DC PDFLibTool Null Pointer Dereference Bug
Source: CVE Program / CVE List V5
Vulnerability Description
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Adobe Acrobat 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Acrobat是美国奥多比（Adobe）公司的一套PDF文件编辑和转换工具。 Adobe Acrobat 存在代码问题漏洞，该漏洞源于NULL指针解引用错误。攻击者可利用该漏洞欺骗受害者打开专门制作的文件，并执行拒绝服务(DoS)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 ~ 2020.004.30005 -

II. Public POCs for CVE-2021-35985

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III. Intelligence Information for CVE-2021-35985

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Vendor Advisories for CVE-2021-35985 (1)

Same Patch Batch · Adobe · 2021-08-20 · 42 CVEs total

CVE-2021-28642 8.8 HIGH Adobe Acrobat Pro DC Out-of-Bounds Write Arbitrary Code Execution Vulnerability
CVE-2021-36011 8.3 HIGH Adobe Illustrator improper neutralization of special elements used in an OS command
CVE-2021-28634 8.2 HIGH Adobe Acrobat Reader AcrobatUtils.scpt Extension OS Command Injection Vulnerability
CVE-2021-35990 7.8 HIGH Adobe Bridge JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2021-28641 7.8 HIGH Adobe Acrobat Reader Use-After-Free Arbitrary Code Execution Vulnerability
CVE-2021-28638 7.8 HIGH Adobe Acrobat Reader DC PDF File Parsing Heap-based Buffer Overflow Remote Code Execution
CVE-2021-28639 7.8 HIGH Adobe Acrobat Reader DC setAction Use-After-Free Remote Code Execution Vulnerability
CVE-2021-35983 7.8 HIGH Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution Vulnerability
CVE-2021-35981 7.8 HIGH Adobe Acrobat Reader DC launchURL Use-After-Free Remote Code Execution Vulnerability
CVE-2021-28635 7.8 HIGH Adobe Acrobat Reader Use-After-Free Vulnerability
CVE-2021-28637 7.8 HIGH Adobe Acrobat Pro DC PDFLibTool Out-of-Bounds Read Remote Code Execution Vulnerability
CVE-2021-35989 7.8 HIGH Adobe Bridge PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2021-35997 7.8 HIGH Adobe Premiere Pro Memory Corruption Remote Code Execution Vulnerability
CVE-2021-28595 7.8 HIGH Adobe Dimension Uncontrolled Search Path Element Could Lead To Remote Code Execution
CVE-2021-36000 7.8 HIGH Adobe Character Animator Memory Corruption Arbitrary Code Execution Vulnerability
CVE-2021-28591 7.8 HIGH Adobe Illustrator PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2021-35999 7.8 HIGH Adobe Prelude Memory Corruption Remote Code Execution Vulnerability
CVE-2021-36005 7.8 HIGH Adobe Photoshop PSD File Parsing Stack Overflow Vulnerability
CVE-2021-28624 7.8 HIGH Adobe Bridge SGI File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerabili
CVE-2021-36009 7.8 HIGH Adobe Illustrator PDF File Parsing Memory Corruption Remote Code Execution Vulnerability

Showing top 20 of 42 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Acrobat Reader
Same vendor: Adobe
Same weakness: CWE-476

V. Comments for CVE-2021-35985

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