CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CVE-2021-34843 (GCVE-0-2021-34843)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14025.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34844 (GCVE-0-2021-34844)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14033.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34845 (GCVE-0-2021-34845)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14034.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34846 (GCVE-0-2021-34846)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14120.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
ZhangJiaxing(@r0fm1a) from Codesafe Team of Legendsec at Qi'anxin Group
Show details on NVD website
To clipboard 

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CVE-2021-34847 (GCVE-0-2021-34847)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14270.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
ZhangJiaxing(@r0fm1a) from Codesafe Team of Legendsec at Qi'anxin Group
Show details on NVD website
To clipboard 

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CVE-2021-34848 (GCVE-0-2021-34848)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14532.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34849 (GCVE-0-2021-34849)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14531.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34850 (GCVE-0-2021-34850)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14529.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34851 (GCVE-0-2021-34851)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14016.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Mat Powell of Trend Micro Zero Day Initiative
Show details on NVD website
To clipboard 

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CVE-2021-34852 (GCVE-0-2021-34852)

Vulnerability from cvelistv5 – Published: 2021-08-04 15:16 – Updated: 2024-08-04 00:26
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. 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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13929.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
zdi
References
Impacted products
Vendor Product Version
Foxit PDF Reader Affected: 11.0.0.49893
Create a notification for this product.
Credits
Xu Peng from UCAS and Wang Yanhao from QiAnXin Technology Research Institute
Show details on NVD website
To clipboard 

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Mitigation

Phase: Architecture and Design

Strategy: Language Selection

Description:

  • Choose a language that provides automatic memory management.
Mitigation

Phase: Implementation

Strategy: Attack Surface Reduction

Description:

  • When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.

Back to CWE stats page