Common Weakness Enumeration

CWE-416

Allowed

Use After Free

Abstraction: Variant · Status: Stable

API response cwe.mitre.org

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

9813 vulnerabilities reference this CWE, most recent first.

CVE-2021-22901 (GCVE-0-2021-22901)

Vulnerability from cvelistv5 – Published: 2021-06-11 15:49 – Updated: 2024-08-03 18:58
VLAI
Summary
curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory.
Severity
No CVSS data available.
CWE
  • CWE-416 - Use After Free (CWE-416)
Assigner
References
Impacted products
Vendor Product Version
n/a https://github.com/curl/curl Affected: 7.75.0 through 7.76.1
Show details on NVD website
To clipboard 

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CVE-2021-22759 (GCVE-0-2021-22759)

Vulnerability from cvelistv5 – Published: 2021-06-11 15:40 – Updated: 2024-08-03 18:51
VLAI
Summary
A CWE-416: Use after free vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data or remote code execution due to use of unchecked input data, when a malicious CGF file is imported to IGSS Definition.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a IGSS Definition (Def.exe) V15.0.0.21140 and prior Affected: IGSS Definition (Def.exe) V15.0.0.21140 and prior
Show details on NVD website
To clipboard 

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CVE-2021-22662 (GCVE-0-2021-22662)

Vulnerability from cvelistv5 – Published: 2021-03-03 16:04 – Updated: 2024-08-03 18:51
VLAI
Summary
A use after free issue has been identified in Fatek FvDesigner Version 1.5.76 and prior in the way the application processes project files, allowing an attacker to craft a special project file that may permit arbitrary code execution.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Fatek FvDesigner Affected: Version 1.5.76 and prior
Show details on NVD website
To clipboard 

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CVE-2021-22545 (GCVE-0-2021-22545)

Vulnerability from cvelistv5 – Published: 2021-06-29 11:55 – Updated: 2024-09-16 16:18
VLAI
Title
Use-after-free in BinDiff
Summary
An attacker can craft a specific IdaPro *.i64 file that will cause the BinDiff plugin to load an invalid memory offset. This can allow the attacker to control the instruction pointer and execute arbitrary code. It is recommended to upgrade BinDiff 7
Severity
7.5 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Google LLC Bindiff Affected: unspecified , < 7.0 (custom)
Create a notification for this product.
Date Public
2021-04-07 00:00
Credits
Mickey Jin of Trend Micro Mobile Security Research Team
Show details on NVD website
To clipboard 

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CVE-2021-21900 (GCVE-0-2021-21900)

Vulnerability from cvelistv5 – Published: 2021-11-19 00:00 – Updated: 2024-08-03 18:30
VLAI
Summary
A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a LibreCAD Affected: LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580
Show details on NVD website
To clipboard 

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CVE-2021-21893 (GCVE-0-2021-21893)

Vulnerability from cvelistv5 – Published: 2021-08-05 20:07 – Updated: 2024-08-03 18:30
VLAI
Summary
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.0.0.49893. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Foxit Affected: Foxit Reader 11.0.0.49893
Show details on NVD website
To clipboard 

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CVE-2021-21870 (GCVE-0-2021-21870)

Vulnerability from cvelistv5 – Published: 2021-08-05 20:07 – Updated: 2024-08-03 18:23
VLAI
Summary
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Foxit Affected: Foxit Reader 10.1.4.37651
Show details on NVD website
To clipboard 

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CVE-2021-21831 (GCVE-0-2021-21831)

Vulnerability from cvelistv5 – Published: 2021-08-05 20:07 – Updated: 2024-08-03 18:23
VLAI
Summary
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Foxit Affected: Foxit Reader 10.1.3.37598
Show details on NVD website
To clipboard 

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CVE-2021-21822 (GCVE-0-2021-21822)

Vulnerability from cvelistv5 – Published: 2021-05-10 15:02 – Updated: 2024-08-03 18:23
VLAI
Summary
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Foxit Affected: Foxit Reader 10.1.3.37598
Show details on NVD website
To clipboard 

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CVE-2021-21796 (GCVE-0-2021-21796)

Vulnerability from cvelistv5 – Published: 2021-10-18 12:42 – Updated: 2024-08-03 18:23
VLAI
Summary
An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause an object containing the path to a document to be destroyed and then later reused, resulting in a use-after-free vulnerability, which can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Nitro Pro Affected: Nitro Pro 13.31.0.605,Nitro Pro 13.33.2.645
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design

Strategy: Language Selection

Choose a language that provides automatic memory management.

Mitigation
Implementation

Strategy: Attack Surface Reduction

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.

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