// For flags

CVE-2018-9958

Foxit Reader Text Annotations point Use-After-Free Remote Code Execution Vulnerability

Severity Score

8.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

5
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.1049. 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 Text Annotations. When setting the point attribute, the process does not properly validate the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-5620.

Esta vulnerabilidad permite que los atacantes remotos ejecuten código arbitrario en instalaciones vulnerables de Foxit Reader 9.0.1.1049. 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 anotaciones de texto. Al establecer el atributo point, el proceso no valida correctamente la existencia de un objeto previa a la realización de operaciones sobre el objeto. Un atacante podría aprovecharse de esta vulnerabilidad para ejecutar código en el contexto del actual proceso. Anteriormente era ZDI-CAN-5620.

This vulnerability allows remote attackers to execute arbitrary code 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 Text Annotations. When setting the point attribute, the process does not properly validate the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under 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: Steven Seeley (mr_me) of Offensive Security
CVSS Scores
Attack Vector
Network
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
Partial
Integrity
Partial
Availability
Partial
* 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
  • 2018-06-25 First Exploit
  • 2024-08-05 CVE Updated
  • 2024-11-10 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-416: Use After Free
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