Common Weakness Enumeration
CWE-125
AllowedOut-of-bounds Read
Abstraction: Base · Status: Draft
The product reads data past the end, or before the beginning, of the intended buffer.
11384 vulnerabilities reference this CWE, most recent first.
GHSA-CGF9-HGH6-4HRM
Vulnerability from github – Published: 2022-05-24 17:31 – Updated: 2023-01-09 18:30
VLAI
Details
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.
Severity
4.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-9894"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-10-16T17:15:00Z",
"severity": "MODERATE"
},
"details": "An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.",
"id": "GHSA-cgf9-hgh6-4hrm",
"modified": "2023-01-09T18:30:25Z",
"published": "2022-05-24T17:31:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9894"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211288"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211290"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211291"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211292"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211293"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211294"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT211295"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-CGFM-62J4-V4RF
Vulnerability from github – Published: 2021-08-25 14:44 – Updated: 2024-11-13 16:36
VLAI
Summary
Heap out of bounds access in sparse reduction operations
Details
Impact
The implementation of sparse reduction operations in TensorFlow can trigger accesses outside of bounds of heap allocated data:
import tensorflow as tf
x = tf.SparseTensor(
indices=[[773, 773, 773], [773, 773, 773]],
values=[1, 1],
dense_shape=[337, 337, 337])
tf.sparse.reduce_sum(x, 1)
The implementation fails to validate that each reduction group does not overflow and that each corresponding index does not point to outside the bounds of the input tensor.
Patches
We have patched the issue in GitHub commit 87158f43f05f2720a374f3e6d22a7aaa3a33f750.
The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by members of the Aivul Team from Qihoo 360.
Severity
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
}
],
"aliases": [
"CVE-2021-37635"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-23T16:57:40Z",
"nvd_published_at": "2021-08-12T21:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nThe implementation of sparse reduction operations in TensorFlow can trigger accesses outside of bounds of heap allocated data:\n\n```python\nimport tensorflow as tf\n\nx = tf.SparseTensor(\n indices=[[773, 773, 773], [773, 773, 773]],\n values=[1, 1],\n dense_shape=[337, 337, 337])\ntf.sparse.reduce_sum(x, 1)\n```\n\nThe [implementation](https://github.com/tensorflow/tensorflow/blob/a1bc56203f21a5a4995311825ffaba7a670d7747/tensorflow/core/kernels/sparse_reduce_op.cc#L217-L228) fails to validate that each reduction group does not overflow and that each corresponding index does not point to outside the bounds of the input tensor.\n\n### Patches\nWe have patched the issue in GitHub commit [87158f43f05f2720a374f3e6d22a7aaa3a33f750](https://github.com/tensorflow/tensorflow/commit/87158f43f05f2720a374f3e6d22a7aaa3a33f750). \n\nThe fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n### Attribution\nThis vulnerability has been reported by members of the Aivul Team from Qihoo 360.",
"id": "GHSA-cgfm-62j4-v4rf",
"modified": "2024-11-13T16:36:10Z",
"published": "2021-08-25T14:44:17Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-cgfm-62j4-v4rf"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37635"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/87158f43f05f2720a374f3e6d22a7aaa3a33f750"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-548.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-746.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-257.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/tensorflow/tensorflow"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Heap out of bounds access in sparse reduction operations"
}
GHSA-CGGM-PVCH-P5V5
Vulnerability from github – Published: 2023-06-23 18:30 – Updated: 2024-04-04 05:07
VLAI
Details
An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Ventura 13.4, macOS Big Sur 11.7.7, macOS Monterey 12.6.6. Processing a 3D model may result in disclosure of process memory
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-32382"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-23T18:15:12Z",
"severity": "MODERATE"
},
"details": "An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Ventura 13.4, macOS Big Sur 11.7.7, macOS Monterey 12.6.6. Processing a 3D model may result in disclosure of process memory",
"id": "GHSA-cggm-pvch-p5v5",
"modified": "2024-04-04T05:07:42Z",
"published": "2023-06-23T18:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32382"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213758"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213759"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213760"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-CGPR-M9MX-94J6
Vulnerability from github – Published: 2024-05-01 03:30 – Updated: 2024-07-03 18:37
VLAI
Details
lunasvg v2.3.9 was discovered to contain a stack-buffer-underflow at lunasvg/source/layoutcontext.cpp.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2024-33763"
],
"database_specific": {
"cwe_ids": [
"CWE-124",
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T03:15:07Z",
"severity": "HIGH"
},
"details": "lunasvg v2.3.9 was discovered to contain a stack-buffer-underflow at lunasvg/source/layoutcontext.cpp.",
"id": "GHSA-cgpr-m9mx-94j6",
"modified": "2024-07-03T18:37:57Z",
"published": "2024-05-01T03:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33763"
},
{
"type": "WEB",
"url": "https://github.com/keepinggg/poc/tree/main/poc_of_lunasvg"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CGQ8-932W-RH8W
Vulnerability from github – Published: 2024-06-05 21:31 – Updated: 2024-06-05 21:31
VLAI
Details
An issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_send_action_frame_cert(), there is no input validation check on len coming from userspace, which can lead to a heap over-read.
Severity
6.0 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-27378"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-20"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-05T19:15:14Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_send_action_frame_cert(), there is no input validation check on len coming from userspace, which can lead to a heap over-read.",
"id": "GHSA-cgq8-932w-rh8w",
"modified": "2024-06-05T21:31:28Z",
"published": "2024-06-05T21:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27378"
},
{
"type": "WEB",
"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CGR8-F44R-J4R5
Vulnerability from github – Published: 2022-05-13 01:51 – Updated: 2022-05-13 01:51
VLAI
Details
A heap-based buffer over-read exists in the function d_expression_1 in cp-demangle.c in GNU libiberty, as distributed in GNU Binutils 2.31.1. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by c++filt.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2018-20712"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-01-15T00:29:00Z",
"severity": "MODERATE"
},
"details": "A heap-based buffer over-read exists in the function d_expression_1 in cp-demangle.c in GNU libiberty, as distributed in GNU Binutils 2.31.1. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by c++filt.",
"id": "GHSA-cgr8-f44r-j4r5",
"modified": "2022-05-13T01:51:06Z",
"published": "2022-05-13T01:51:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20712"
},
{
"type": "WEB",
"url": "https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88629"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=24043"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K38336243"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/106563"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CGRP-R5PH-95G9
Vulnerability from github – Published: 2022-02-19 00:01 – Updated: 2022-02-25 00:01
VLAI
Details
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Sante DICOM Viewer Pro 11.8.7.0. 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 GIF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14972.
{
"affected": [],
"aliases": [
"CVE-2022-24055"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-18T20:15:00Z",
"severity": "MODERATE"
},
"details": "This vulnerability allows remote attackers to disclose sensitive information on affected installations of Sante DICOM Viewer Pro 11.8.7.0. 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 GIF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14972.",
"id": "GHSA-cgrp-r5ph-95g9",
"modified": "2022-02-25T00:01:14Z",
"published": "2022-02-19T00:01:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24055"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-247"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-CGRQ-2R8Q-58FC
Vulnerability from github – Published: 2025-09-22 21:30 – Updated: 2025-09-22 21:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ASoC: codecs: rx-macro: fix accessing array out of bounds for enum type
Accessing enums using integer would result in array out of bounds access on platforms like aarch64 where sizeof(long) is 8 compared to enum size which is 4 bytes.
Severity
7.1 (High)
{
"affected": [],
"aliases": [
"CVE-2022-49252"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:02Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: rx-macro: fix accessing array out of bounds for enum type\n\nAccessing enums using integer would result in array out of bounds access\non platforms like aarch64 where sizeof(long) is 8 compared to enum size\nwhich is 4 bytes.",
"id": "GHSA-cgrq-2r8q-58fc",
"modified": "2025-09-22T21:30:15Z",
"published": "2025-09-22T21:30:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49252"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e3629e256d1cabf801d00050550ade4d036cafe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aed43e92e4b9187029903880d5db608f7fa1c53c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bcfe5f76cc4051ea3f9eb5d2c8ea621641f290a5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb15c6ea692fd88d70698d874d9a0d667fb4cde9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CGW7-3F4W-4C8F
Vulnerability from github – Published: 2022-05-24 16:48 – Updated: 2024-04-04 01:04
VLAI
Details
Out of bounds array access in WebRTC in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2018-6129"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-27T17:15:00Z",
"severity": "MODERATE"
},
"details": "Out of bounds array access in WebRTC in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.",
"id": "GHSA-cgw7-3f4w-4c8f",
"modified": "2024-04-04T01:04:31Z",
"published": "2022-05-24T16:48:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-6129"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2018/05/stable-channel-update-for-desktop_58.html"
},
{
"type": "WEB",
"url": "https://crbug.com/838672"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CGWC-VHC7-P6CV
Vulnerability from github – Published: 2022-05-17 00:14 – Updated: 2022-05-17 00:14
VLAI
Details
An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. This vulnerability occurs as a result of a computation that reads data that is past the end of the target buffer; the computation is part of the JPEG 2000 parser. The use of an invalid (out-of-range) pointer offset during access of internal data structure fields causes the vulnerability. A successful attack can lead to sensitive data exposure.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2017-16400"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-12-09T06:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. This vulnerability occurs as a result of a computation that reads data that is past the end of the target buffer; the computation is part of the JPEG 2000 parser. The use of an invalid (out-of-range) pointer offset during access of internal data structure fields causes the vulnerability. A successful attack can lead to sensitive data exposure.",
"id": "GHSA-cgwc-vhc7-p6cv",
"modified": "2022-05-17T00:14:38Z",
"published": "2022-05-17T00:14:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16400"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb17-36.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/102140"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039791"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
Mitigation
Architecture and Design
Strategy: Language Selection
Use a language that provides appropriate memory abstractions.
CAPEC-540: Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.