Common Weakness Enumeration

CWE-122

Allowed

Heap-based Buffer Overflow

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

4106 vulnerabilities reference this CWE, most recent first.

CVE-2021-21940 (GCVE-0-2021-21940)

Vulnerability from cvelistv5 – Published: 2021-10-12 13:35 – Updated: 2024-08-03 18:30
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted network packet can lead to a heap buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.
Severity
10 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a Anker Affected: Anker Eufy Homebase 2 2.1.6.9h
Show details on NVD website
To clipboard 

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CVE-2021-21914 (GCVE-0-2021-21914)

Vulnerability from cvelistv5 – Published: 2022-04-14 19:55 – Updated: 2025-04-15 19:09
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the DecoderStream::Append functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Accusoft ImageGear Affected: 19.10
Create a notification for this product.
Date Public
2022-02-23 00:00
Show details on NVD website
To clipboard 

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CVE-2021-21830 (GCVE-0-2021-21830)

Vulnerability from cvelistv5 – Published: 2021-08-13 18:16 – Updated: 2024-08-03 18:23
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the XML Decompression LabelDict::Load functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a AT&T Affected: AT&T Labs Xmill 0.7
Show details on NVD website
To clipboard 

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CVE-2021-21829 (GCVE-0-2021-21829)

Vulnerability from cvelistv5 – Published: 2021-08-13 18:17 – Updated: 2024-08-03 18:23
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the XML Decompression EnumerationUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a AT&T Affected: AT&T Labs Xmill 0.7
Show details on NVD website
To clipboard 

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CVE-2021-21825 (GCVE-0-2021-21825)

Vulnerability from cvelistv5 – Published: 2021-08-18 12:52 – Updated: 2024-08-03 18:23
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the XML Decompression PlainTextUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a AT&T Affected: AT&T Labs Xmill 0.7, Schneider Electric EcoStruxure Control Expert 15
Show details on NVD website
To clipboard 

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CVE-2021-21810 (GCVE-0-2021-21810)

Vulnerability from cvelistv5 – Published: 2021-08-17 19:17 – Updated: 2024-08-03 18:23
VLAI
Summary
A memory corruption vulnerability exists in the XML-parsing ParseAttribs functionality of AT&T Labs’ Xmill 0.7. A specially crafted XML file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a AT&T Labs Affected: AT&T Labs Xmill 0.7
Show details on NVD website
To clipboard 

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CVE-2021-21795 (GCVE-0-2021-21795)

Vulnerability from cvelistv5 – Published: 2021-06-11 16:17 – Updated: 2024-08-03 18:23
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the PSD read_icc_icCurve_data functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to an integer overflow that, in turn, leads to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
n/a Accusoft Affected: Accusoft ImageGear 19.9
Show details on NVD website
To clipboard 

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CVE-2021-21572 (GCVE-0-2021-21572)

Vulnerability from cvelistv5 – Published: 2021-06-24 17:00 – Updated: 2024-09-16 19:30
VLAI
Summary
Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.
Severity
7.2 (High)
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Dell BIOSConnect Affected: unspecified , < Gen 11, Gen 10 (custom)
Create a notification for this product.
Date Public
2021-06-24 00:00
Show details on NVD website
To clipboard 

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CVE-2021-21555 (GCVE-0-2021-21555)

Vulnerability from cvelistv5 – Published: 2021-06-14 19:10 – Updated: 2024-09-16 22:29
VLAI
Summary
Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS contain a heap-based buffer overflow vulnerability in systems with NVDIMM-N installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.
Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Dell PowerEdge BIOS Intel 15G Affected: unspecified , < 2.11.2 (custom)
Create a notification for this product.
Date Public
2021-06-08 00:00
Show details on NVD website
To clipboard 

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CVE-2021-21554 (GCVE-0-2021-21554)

Vulnerability from cvelistv5 – Published: 2021-06-14 19:10 – Updated: 2024-09-16 16:42
VLAI
Summary
Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and, Dell Precision 7920 Rack Workstation BIOS contain a stack-based buffer overflow vulnerability in systems with Intel Optane DC Persistent Memory installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.
Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Dell PowerEdge BIOS Intel 15G Affected: unspecified , < 2.9.4 (custom)
Create a notification for this product.
Date Public
2021-06-08 00:00
Show details on NVD website
To clipboard 

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Mitigation

Pre-design: Use a language or compiler that performs automatic bounds checking.

Mitigation
Architecture and Design

Use an abstraction library to abstract away risky APIs. Not a complete solution.

Mitigation MIT-10
Operation Build and Compilation

Strategy: Environment Hardening

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-11
Operation Build and Compilation

Strategy: Environment Hardening

  • Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation
Implementation

Implement and perform bounds checking on input.

Mitigation
Implementation

Strategy: Libraries or Frameworks

Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.

Mitigation
Operation

Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.

CAPEC-92: Forced Integer Overflow

This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

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