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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-2020-24437 (GCVE-0-2020-24437)

Vulnerability from cvelistv5 – Published: 2020-11-05 19:31 – Updated: 2024-09-16 18:34
VLAI
Title
Acrobat Reader DC Use-After-Free Vulnerability Could Lead to Arbitrary Code Execution
Summary
Acrobat Reader DC versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a use-after-free vulnerability in the processing of Format event actions that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-416 - Use After Free (CWE-416)
Assigner
References
Impacted products
Vendor Product Version
Adobe Acrobat Reader Affected: unspecified , ≤ 2017.011.30175 (custom)
Affected: unspecified , ≤ 2020.012.20048 (custom)
Affected: unspecified , ≤ 2020.001.30005 (custom)
Affected: unspecified , ≤ None (custom)
Create a notification for this product.
Date Public
2020-11-03 00:00
Show details on NVD website
To clipboard 

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CVE-2020-24438 (GCVE-0-2020-24438)

Vulnerability from cvelistv5 – Published: 2020-11-05 19:32 – Updated: 2024-09-16 16:17
VLAI
Title
Acrobat Reader DC Use-After-Free Vulnerability Could Lead to Information Disclosure
Summary
Acrobat Reader DC versions 2020.012.20048 (and earlier), 2020.001.30005 (and earlier) and 2017.011.30175 (and earlier) are affected by a use-after-free vulnerability that could result in a memory address leak. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE
  • CWE-416 - Use After Free (CWE-416)
Assigner
References
Impacted products
Vendor Product Version
Adobe Acrobat Reader Affected: unspecified , ≤ 2017.011.30175 (custom)
Affected: unspecified , ≤ 2020.012.20048 (custom)
Affected: unspecified , ≤ 2020.001.30005 (custom)
Affected: unspecified , ≤ None (custom)
Create a notification for this product.
Date Public
2020-11-03 00:00
Show details on NVD website
To clipboard 

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CVE-2020-25632 (GCVE-0-2020-25632)

Vulnerability from cvelistv5 – Published: 2021-03-03 16:40 – Updated: 2024-08-04 15:40
VLAI
Summary
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a grub2 Affected: grub 2.06
Show details on NVD website
To clipboard 

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CVE-2020-25656 (GCVE-0-2020-25656)

Vulnerability from cvelistv5 – Published: 2020-12-02 00:00 – Updated: 2024-08-04 15:40
VLAI
Summary
A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel 5.10-rc2
Show details on NVD website
To clipboard 

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CVE-2020-25663 (GCVE-0-2020-25663)

Vulnerability from cvelistv5 – Published: 2020-12-08 20:57 – Updated: 2024-08-04 15:40
VLAI
Summary
A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a ImageMagick Affected: prior to 7.0.9-0
Show details on NVD website
To clipboard 

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CVE-2020-25669 (GCVE-0-2020-25669)

Vulnerability from cvelistv5 – Published: 2021-05-26 11:25 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: 5.9.4
Show details on NVD website
To clipboard 

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CVE-2020-25670 (GCVE-0-2020-25670)

Vulnerability from cvelistv5 – Published: 2021-05-26 10:28 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: All
Show details on NVD website
To clipboard 

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CVE-2020-25671 (GCVE-0-2020-25671)

Vulnerability from cvelistv5 – Published: 2021-05-26 10:44 – Updated: 2024-08-04 15:40
VLAI
Summary
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Linux Kernel Affected: All
Show details on NVD website
To clipboard 

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CVE-2020-25725 (GCVE-0-2020-25725)

Vulnerability from cvelistv5 – Published: 2020-11-21 05:29 – Updated: 2024-08-04 15:40
VLAI
Summary
In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.
Severity
5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Glyph & Cog xpdf Affected: 4.02
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-27267 (GCVE-0-2020-27267)

Vulnerability from cvelistv5 – Published: 2021-01-13 23:25 – Updated: 2024-08-04 16:11
VLAI
Summary
KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versions), OPC-Aggregator (all versions), Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server v7.68.804 and v7.66, and Software Toolbox TOP Server all 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a PTC Kepware KEPServerEX Affected: v6.0 to v6.9
n/a ThingWorx Kepware Server Affected: v6.8 and v6.9
n/a ThingWorx Industrial Connectivity Affected: All versions
n/a OPC-Aggregator Affected: All versions
n/a Rockwell Automation KEPServer Enterprise Affected: All versions
n/a GE Digital Industrial Gateway Server Affected: v7.68.804
Affected: v7.66
n/a Software Toolbox TOP Server Affected: All 6.x versions
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.

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