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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

9983 vulnerabilities reference this CWE, most recent first.

CVE-2022-0413 (GCVE-0-2022-0413)

Vulnerability from cvelistv5 – Published: 2022-01-30 00:00 – Updated: 2024-08-02 23:25
VLAI
Title
Use After Free in vim/vim
Summary
Use After Free in GitHub repository vim/vim prior to 8.2.
Severity
8.4 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
vim vim/vim Affected: unspecified , < 8.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2022-0216 (GCVE-0-2022-0216)

Vulnerability from cvelistv5 – Published: 2022-08-26 00:00 – Updated: 2024-08-02 23:18
VLAI
Summary
A use-after-free vulnerability was found in the LSI53C895A SCSI Host Bus Adapter emulation of QEMU. The flaw occurs while processing repeated messages to cancel the current SCSI request via the lsi_do_msgout function. This flaw allows a malicious privileged user within the guest to crash the QEMU process on the host, resulting in a denial of service.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a QEMU Affected: Affects QEMU < v6.0.0, Fixed in v7.1.0-rc0
Show details on NVD website
To clipboard 

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CVE-2022-0156 (GCVE-0-2022-0156)

Vulnerability from cvelistv5 – Published: 2022-01-10 15:26 – Updated: 2024-08-02 23:18
VLAI
Title
Use After Free in vim/vim
Summary
vim is vulnerable to Use After Free
Severity
6.8 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
vim vim/vim Affected: unspecified , < 8.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2022-0139 (GCVE-0-2022-0139)

Vulnerability from cvelistv5 – Published: 2022-02-08 18:40 – Updated: 2024-08-02 23:18
VLAI
Title
Use After Free in radareorg/radare2
Summary
Use After Free in GitHub repository radareorg/radare2 prior to 5.6.0.
Severity
7.1 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
radareorg radareorg/radare2 Affected: unspecified , < 5.6.0 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-46655 (GCVE-0-2021-46655)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:46 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. 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 JT files. 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-15630.
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
Bentley View Affected: 10.15.0.75
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-2021-46633 (GCVE-0-2021-46633)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:46 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 PDF files. 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-15463.
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
Bentley MicroStation CONNECT Affected: 10.16.0.80
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-2021-46627 (GCVE-0-2021-46627)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:45 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. 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 DXF files. 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-15457.
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
Bentley View Affected: 10.15.0.75
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-2021-46613 (GCVE-0-2021-46613)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:45 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 DXF files. 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-15407.
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
Bentley MicroStation CONNECT Affected: 10.16.0.80
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-2021-46609 (GCVE-0-2021-46609)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:45 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 PDF files. 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-15403.
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
Bentley MicroStation CONNECT Affected: 10.16.0.80
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-2021-46601 (GCVE-0-2021-46601)

Vulnerability from cvelistv5 – Published: 2022-02-18 19:45 – Updated: 2024-08-04 05:10
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 JT files. 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-15395.
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
Bentley MicroStation CONNECT Affected: 10.16.0.80
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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        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
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      "references": [
        {
          "tags": [
            "x_refsource_MISC"
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          "url": "https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-22-188/"
        }
      ],
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          "ASSIGNER": "zdi-disclosures@trendmicro.com",
          "ID": "CVE-2021-46601",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "MicroStation CONNECT",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "10.16.0.80"
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        "credit": "Mat Powell of Trend Micro Zero Day Initiative",
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 JT files. 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-15395."
            }
          ]
        },
        "impact": {
          "cvss": {
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.0"
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        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-416: Use After Free"
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              ]
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        "references": {
          "reference_data": [
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              "name": "https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005",
              "refsource": "MISC",
              "url": "https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005"
            },
            {
              "name": "https://www.zerodayinitiative.com/advisories/ZDI-22-188/",
              "refsource": "MISC",
              "url": "https://www.zerodayinitiative.com/advisories/ZDI-22-188/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2021-46601",
    "datePublished": "2022-02-18T19:45:19.000Z",
    "dateReserved": "2022-01-26T00:00:00.000Z",
    "dateUpdated": "2024-08-04T05:10:35.328Z",
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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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