// For flags

CVE-2021-21098

Adobe InDesign PCX file parsing out-of-bounds write vulnerability could lead to remote code execution

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Adobe InDesign version 16.0 (and earlier) is affected by an Out-of-bounds Write vulnerability when parsing a crafted file. An unauthenticated attacker could leverage this vulnerability to achieve remote code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Adobe InDesign versiones 16.0 (y anteriores), está afectada por una vulnerabilidad de escritura fuera de límites cuando se analiza un archivo diseñado. Un atacante no autenticado podría aprovechar esta vulnerabilidad para lograr una ejecución de código remota en el contexto del usuario actual. Una explotación de este problema requiere una interacción del usuario, en que la víctima debe abrir un archivo malicioso

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe InDesign. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of PCX files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Francis Provencher {PRL}
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-18 CVE Reserved
  • 2021-05-13 CVE Published
  • 2024-04-30 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Adobe
Search vendor "Adobe"
Indesign
Search vendor "Adobe" for product "Indesign"
<= 16.0
Search vendor "Adobe" for product "Indesign" and version " <= 16.0"
-
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe