CWE-787
Weakness Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
Dimensions
- Behavior-Type: Write
- Resource-Type: Memory Buffer
- Resource-Property: Out-of-bounds
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities. However, closer examination is required.
While this CWE is allowed for mapping, it has more specific children that might be a better fit. Carefully read both the name and description to ensure that this mapping is appropriate. Consider the root cause errors that have led to the out-of-bounds write by examining "CanFollow" relationships for this entry.
Relationships and members
Modes of introduction
Detection methods
Automated Static Analysis
This weakness can often be detected using automated static analysis tools. Many modern tools use data flow analysis or constraint-based techniques to minimize the number of false positives.
Automated static analysis generally does not account for environmental considerations when reporting out-of-bounds memory operations. This can make it difficult for users to determine which warnings should be investigated first. For example, an analysis tool might report buffer overflows that originate from command line arguments in a program that is not expected to run with setuid or other special privileges.
Effectiveness: High
Detection techniques for buffer-related errors are more mature than for most other weakness types.
Automated Dynamic Analysis
This weakness can be detected using dynamic tools and techniques that interact with the software using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The software's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Content history
Suggested mappings to ISA/IEC 62443.
Provided diagram to improve CWE usability
updated Demonstrative_Examples
updated Relationships
updated Common_Consequences
updated Demonstrative_Examples
updated Relationships
updated Description
updated Applicable_Platforms, Demonstrative_Examples, Detection_Factors, Likelihood_of_Exploit, Observed_Examples, Potential_Mitigations, References, Relationships, Time_of_Introduction
updated Observed_Examples, Relationships
updated Observed_Examples
updated Alternate_Terms, Demonstrative_Examples, Observed_Examples, Relationships
updated Relationships
updated Demonstrative_Examples
updated Demonstrative_Examples, Potential_Mitigations, Relationships
updated Observed_Examples, Relationships
updated Applicable_Platforms
updated Alternate_Terms, Demonstrative_Examples, Description
updated Potential_Mitigations, References, Relationships, Taxonomy_Mappings
updated Mapping_Notes, Relationships, Taxonomy_Mappings
updated Demonstrative_Examples
updated Alternate_Terms, Common_Consequences, Description, Diagram, Weakness_Ordinalities
updated Observed_Examples, Relationships
updated Observed_Examples, Relationships
updated Affected_Resources, Functional_Areas, References
updated Applicable_Platforms, Detection_Factors, References, Relationships
updated Mapping_Notes
updated Dimensions, Observed_Examples, References, Relationships, Taxonomy_Mappings
16870 vulnerabilities reference this CWE, most recent first.
GHSA-HP6W-J757-J5CG
Vulnerability from github – Published: 2022-10-13 19:00 – Updated: 2022-10-14 19:00SWFTools commit 772e55a2 was discovered to contain a heap-buffer overflow via png_read_header at /src/png2swf.c.
{
"affected": [],
"aliases": [
"CVE-2022-35081"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-13T12:15:00Z",
"severity": "MODERATE"
},
"details": "SWFTools commit 772e55a2 was discovered to contain a heap-buffer overflow via png_read_header at /src/png2swf.c.",
"id": "GHSA-hp6w-j757-j5cg",
"modified": "2022-10-14T19:00:17Z",
"published": "2022-10-13T19:00:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35081"
},
{
"type": "WEB",
"url": "https://github.com/matthiaskramm/swftools/issues/183"
},
{
"type": "WEB",
"url": "https://github.com/Cvjark/Poc/blob/main/swftools/png2swf/CVE-2022-35081.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HP86-FC6R-WG46
Vulnerability from github – Published: 2024-01-08 15:30 – Updated: 2024-04-09 21:31Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 chain_table parsing functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the chain_table of FST_BL_VCDATA and FST_BL_VCDATA_DYN_ALIAS section types.
{
"affected": [],
"aliases": [
"CVE-2023-35969"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-08T15:15:12Z",
"severity": "HIGH"
},
"details": "Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 chain_table parsing functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the chain_table of `FST_BL_VCDATA` and `FST_BL_VCDATA_DYN_ALIAS` section types.",
"id": "GHSA-hp86-fc6r-wg46",
"modified": "2024-04-09T21:31:53Z",
"published": "2024-01-08T15:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35969"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1789"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1789"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HP9R-WCFH-72PR
Vulnerability from github – Published: 2025-02-25 18:31 – Updated: 2026-04-06 15:31A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.
{
"affected": [],
"aliases": [
"CVE-2025-26595"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-25T16:15:38Z",
"severity": "HIGH"
},
"details": "A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.",
"id": "GHSA-hp9r-wcfh-72pr",
"modified": "2026-04-06T15:31:19Z",
"published": "2025-02-25T18:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26595"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00036.html"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2345257"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-26595"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:7458"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:7165"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:7163"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:3976"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2880"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2879"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2875"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2874"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2873"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2866"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2865"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2862"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2861"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2502"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:2500"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPC3-P8JP-XC4Q
Vulnerability from github – Published: 2023-06-28 18:30 – Updated: 2024-04-04 05:14In encode of wlandata.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-263783137References: N/A
{
"affected": [],
"aliases": [
"CVE-2023-21157"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-28T18:15:13Z",
"severity": "MODERATE"
},
"details": "In encode of wlandata.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-263783137References: N/A",
"id": "GHSA-hpc3-p8jp-xc4q",
"modified": "2024-04-04T05:14:45Z",
"published": "2023-06-28T18:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21157"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2023-06-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPCQ-8GWP-FP42
Vulnerability from github – Published: 2025-09-04 12:30 – Updated: 2025-09-04 15:30In unknown of cd_CnMsgCodecUserApi.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2025-36897"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-04T10:42:30Z",
"severity": "CRITICAL"
},
"details": "In unknown of cd_CnMsgCodecUserApi.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-hpcq-8gwp-fp42",
"modified": "2025-09-04T15:30:28Z",
"published": "2025-09-04T12:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36897"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2025-09-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPFQ-C235-5854
Vulnerability from github – Published: 2025-10-06 09:30 – Updated: 2025-10-19 15:30When decoding an OpenEXR file that uses DWAA or DWAB compression, there's an implicit assumption that all image channels have the same pixel type (and size), and that if there are four channels, the first four are "B", "G", "R" and "A". The channel parsing code can be found in decode_header. The buffer td->uncompressed_data is allocated in decode_block based on the xsize, ysize and computed current_channel_offset.
The function dwa_uncompress then assumes at [5] that if there are 4 channels, these are "B", "G", "R" and "A", and in the calculations at [6] and [7] that all channels are of the same type, which matches the type of the main color channels.
If we set the main color channels to a 4-byte type and add duplicate or unknown channels of the 2-byte EXR_HALF type, then the addition at [7] will increment the pointer by 4-bytes * xsize * nb_channels, which will exceed the allocated buffer.
We recommend upgrading to version 8.0 or beyond.
{
"affected": [],
"aliases": [
"CVE-2025-59733"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-06T08:15:35Z",
"severity": "HIGH"
},
"details": "When decoding an OpenEXR file that uses DWAA or DWAB compression, there\u0027s an implicit assumption that all image channels have the same pixel type (and size), and that if there are four channels, the first four are \"B\", \"G\", \"R\"\u00a0and \"A\". The channel parsing code can be found in decode_header.\u00a0The buffer td-\u003euncompressed_data\u00a0is allocated in decode_block\u00a0based on the xsize, ysize\u00a0and computed current_channel_offset.\n\nThe function dwa_uncompress\u00a0then assumes at [5] that if there are 4 channels, these are \"B\", \"G\", \"R\"\u00a0and \"A\", and in the calculations at [6] and [7] that all channels are of the same type, which matches the type of the main color channels.\n\nIf we set the main color channels to a 4-byte type and add duplicate or unknown channels of the 2-byte EXR_HALF\u00a0type, then the addition at [7] will increment the pointer by 4-bytes * xsize * nb_channels, which will exceed the allocated buffer.\n\n\n\n\n\nWe recommend upgrading to version 8.0 or beyond.",
"id": "GHSA-hpfq-c235-5854",
"modified": "2025-10-19T15:30:15Z",
"published": "2025-10-06T09:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59733"
},
{
"type": "WEB",
"url": "https://b.corp.google.com/issues/436511754"
},
{
"type": "WEB",
"url": "https://issuetracker.google.com/436511754"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-HPFX-WV7Q-52QW
Vulnerability from github – Published: 2022-05-24 19:04 – Updated: 2022-10-08 00:00SAP Internet Graphics Service, versions - 7.20,7.20EXT,7.53,7.20_EX2,7.81, allows an unauthenticated attacker after retrieving an existing system state value can submit a malicious IGS request over a network which due to insufficient input validation in method CiXMLIStreamRawBuffer::readRaw () which will trigger an internal memory corruption error in the system causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
{
"affected": [],
"aliases": [
"CVE-2021-27624"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-09T14:15:00Z",
"severity": "MODERATE"
},
"details": "SAP Internet Graphics Service, versions - 7.20,7.20EXT,7.53,7.20_EX2,7.81, allows an unauthenticated attacker after retrieving an existing system state value can submit a malicious IGS request over a network which due to insufficient input validation in method CiXMLIStreamRawBuffer::readRaw () which will trigger an internal memory corruption error in the system causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.",
"id": "GHSA-hpfx-wv7q-52qw",
"modified": "2022-10-08T00:00:33Z",
"published": "2022-05-24T19:04:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27624"
},
{
"type": "WEB",
"url": "https://launchpad.support.sap.com/#/notes/3021050"
},
{
"type": "WEB",
"url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/164598/SAP-NetWeaver-ABAP-IGS-Memory-Corruption.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2021/Oct/31"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPG2-6H2P-QCGX
Vulnerability from github – Published: 2022-05-13 01:20 – Updated: 2022-05-13 01:20Stack-based buffer overflow can occur In the WLAN driver if the pmkid_count value is larger than the PMKIDCache size in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel.
{
"affected": [],
"aliases": [
"CVE-2018-3580"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-06T21:29:00Z",
"severity": "HIGH"
},
"details": "Stack-based buffer overflow can occur In the WLAN driver if the pmkid_count value is larger than the PMKIDCache size in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel.",
"id": "GHSA-hpg2-6h2p-qcgx",
"modified": "2022-05-13T01:20:08Z",
"published": "2022-05-13T01:20:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3580"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2018-05-01"
},
{
"type": "WEB",
"url": "https://www.codeaurora.org/security-bulletin/2018/05/11/may-2018-code-aurora-security-bulletin-2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPG3-9C25-RPW7
Vulnerability from github – Published: 2023-07-06 15:30 – Updated: 2025-11-04 21:30Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the firewall_handler_set function with the index and description variables.
{
"affected": [],
"aliases": [
"CVE-2023-25088"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-06T15:15:12Z",
"severity": "HIGH"
},
"details": "Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the firewall_handler_set function with the index and description variables.",
"id": "GHSA-hpg3-9c25-rpw7",
"modified": "2025-11-04T21:30:34Z",
"published": "2023-07-06T15:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25088"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1716"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1716"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HPG8-X2MF-JW6X
Vulnerability from github – Published: 2026-03-27 00:31 – Updated: 2026-03-27 00:31A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.
{
"affected": [],
"aliases": [
"CVE-2026-4902"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-26T23:16:21Z",
"severity": "HIGH"
},
"details": "A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.",
"id": "GHSA-hpg8-x2mf-jw6x",
"modified": "2026-03-27T00:31:21Z",
"published": "2026-03-27T00:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4902"
},
{
"type": "WEB",
"url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_addressNat_page-32053a41781f8017938dda66f0193ebd?source=copy_link"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.353653"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.353653"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.777378"
},
{
"type": "WEB",
"url": "https://www.tenda.com.cn"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation MIT-3
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
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-9
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
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 MIT-12
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.