// For flags

CVE-2018-9948

Foxit Reader Typed Array Uninitialized Pointer Information Disclosure Vulnerability

Severity Score

6.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.0.0.29935. 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 handling of typed arrays. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-5380.

Esta vulnerabilidad permite que atacantes remotos revelen información sensible en instalaciones vulnerables de Foxit Reader 9.0.0.29935. Se requiere de interacción del usuario para explotar esta vulnerabilidad en la que el objetivo debe visitar una página maliciosa o abrir un archivo malicioso. Este error en concreto existe en el análisis de arrays con tipo. El problema resulta de la falta de inicialización adecuada de un puntero antes de acceder a el. Un atacante podría aprovecharse de esta vulnerabilidad y otras para ejecutar código en el contexto del actual proceso. Anteriormente era ZDI-CAN-5380.

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader. 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 handling of typed arrays. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

Foxit PDF Reader version 9.0.1.1049 has a use-after-free vulnerability in the Text Annotations component and the TypedArray's use uninitialized pointers. The vulnerabilities can be combined to leak a vtable memory address, which can be adjusted to point to the base address of the executable. A ROP chain can be constructed that will execute when Foxit Reader performs the UAF.

*Credits: bit from meepwn team
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-04-10 CVE Reserved
  • 2018-04-20 CVE Published
  • 2018-09-11 First Exploit
  • 2024-08-05 CVE Updated
  • 2024-11-10 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-824: Access of Uninitialized Pointer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Foxitsoftware
Search vendor "Foxitsoftware"
Foxit Reader
Search vendor "Foxitsoftware" for product "Foxit Reader"
<= 9.0.1.1049
Search vendor "Foxitsoftware" for product "Foxit Reader" and version " <= 9.0.1.1049"
-
Affected
Foxitsoftware
Search vendor "Foxitsoftware"
Phantompdf
Search vendor "Foxitsoftware" for product "Phantompdf"
<= 9.0.1.1049
Search vendor "Foxitsoftware" for product "Phantompdf" and version " <= 9.0.1.1049"
-
Affected