CWE-787
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.
15535 vulnerabilities reference this CWE, most recent first.
GHSA-79RJ-564V-63CR
Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2022-05-24 17:48An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_decode() performs incorrect memory handling while parsing crafted XML files, leading to a heap-based buffer overflow.
{
"affected": [],
"aliases": [
"CVE-2021-31598"
],
"database_specific": {
"cwe_ids": [
"CWE-787",
"CWE-91"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-24T17:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_decode() performs incorrect memory handling while parsing crafted XML files, leading to a heap-based buffer overflow.",
"id": "GHSA-79rj-564v-63cr",
"modified": "2022-05-24T17:48:44Z",
"published": "2022-05-24T17:48:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31598"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00005.html"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/ezxml/bugs/28"
}
],
"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-79RV-WG4R-99GP
Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-07-14 21:31In the Linux kernel, the following vulnerability has been resolved:
sctp: fix OOB write to userspace in sctp_getsockopt_peer_auth_chunks
sctp_getsockopt_peer_auth_chunks() checks that the caller's optval buffer is large enough for the peer AUTH chunk list with
if (len < num_chunks)
return -EINVAL;
but then writes num_chunks bytes to p->gauth_chunks, which lives at offset offsetof(struct sctp_authchunks, gauth_chunks) == 8 inside optval. The check is missing the sizeof(struct sctp_authchunks) = 8-byte header. When the caller supplies len == num_chunks (for any num_chunks > 0) the test passes but copy_to_user() writes sizeof(struct sctp_authchunks) = 8 bytes past the declared buffer.
The sibling function sctp_getsockopt_local_auth_chunks() at the next line already has the correct check:
if (len < sizeof(struct sctp_authchunks) + num_chunks)
return -EINVAL;
Align the peer variant with its sibling.
Reproducer confirms on v7.0-13-generic: an unprivileged userspace caller that opens a loopback SCTP association with AUTH enabled, queries num_chunks with a short optval, then issues the real getsockopt with len == num_chunks and sentinel bytes painted past the buffer observes those sentinel bytes overwritten with the peer's AUTH chunk type. The bytes written are under the peer's control but land in the caller's own userspace; this is not a kernel memory corruption, but it is a kernel-side contract violation that can silently corrupt adjacent userspace data.
{
"affected": [],
"aliases": [
"CVE-2026-53004"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-24T17:17:11Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix OOB write to userspace in sctp_getsockopt_peer_auth_chunks\n\nsctp_getsockopt_peer_auth_chunks() checks that the caller\u0027s optval\nbuffer is large enough for the peer AUTH chunk list with\n\n if (len \u003c num_chunks)\n return -EINVAL;\n\nbut then writes num_chunks bytes to p-\u003egauth_chunks, which lives\nat offset offsetof(struct sctp_authchunks, gauth_chunks) == 8\ninside optval. The check is missing the sizeof(struct\nsctp_authchunks) = 8-byte header. When the caller supplies\nlen == num_chunks (for any num_chunks \u003e 0) the test passes but\ncopy_to_user() writes sizeof(struct sctp_authchunks) = 8 bytes\npast the declared buffer.\n\nThe sibling function sctp_getsockopt_local_auth_chunks() at the\nnext line already has the correct check:\n\n if (len \u003c sizeof(struct sctp_authchunks) + num_chunks)\n return -EINVAL;\n\nAlign the peer variant with its sibling.\n\nReproducer confirms on v7.0-13-generic: an unprivileged userspace\ncaller that opens a loopback SCTP association with AUTH enabled,\nqueries num_chunks with a short optval, then issues the real\ngetsockopt with len == num_chunks and sentinel bytes painted past\nthe buffer observes those sentinel bytes overwritten with the\npeer\u0027s AUTH chunk type. The bytes written are under the peer\u0027s\ncontrol but land in the caller\u0027s own userspace; this is not a\nkernel memory corruption, but it is a kernel-side contract\nviolation that can silently corrupt adjacent userspace data.",
"id": "GHSA-79rv-wg4r-99gp",
"modified": "2026-07-14T21:31:28Z",
"published": "2026-06-24T18:32:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53004"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0cf004ffb61cd32d140531c3a84afe975f9fc7ea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b5a2c957c7769d40110f725cf23987fcef50d75"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6849b995cda88a677bf08a05765d1db7905974fc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6bcf8fe4ef7967b22b814cbae9a57bbd3c853410"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/70a089cc9590aa347a61e84434116ab74619e3c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a132e199de69e2a45628aa8534df1bf5d44e1b6e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d45c7e99caf915b0f6c716bd8ffe9d45b9685761"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d67fbc6dea5dbf7f46c618ebf65910a276078e20"
}
],
"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-79V8-CJR8-QH3M
Vulnerability from github – Published: 2025-07-21 21:31 – Updated: 2025-07-21 21:31INVT VT-Designer PM3 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of INVT VT-Designer. 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 PM3 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25722.
{
"affected": [],
"aliases": [
"CVE-2025-7229"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-21T20:15:43Z",
"severity": "HIGH"
},
"details": "INVT VT-Designer PM3 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of INVT VT-Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of PM3 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25722.",
"id": "GHSA-79v8-cjr8-qh3m",
"modified": "2025-07-21T21:31:38Z",
"published": "2025-07-21T21:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7229"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-480"
}
],
"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-79VC-H8W8-HFW5
Vulnerability from github – Published: 2026-03-03 21:31 – Updated: 2026-03-04 18:31Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetDomainFilter.
{
"affected": [],
"aliases": [
"CVE-2025-70236"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-03T20:16:44Z",
"severity": "CRITICAL"
},
"details": "Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formSetDomainFilter.",
"id": "GHSA-79vc-h8w8-hfw5",
"modified": "2026-03-04T18:31:50Z",
"published": "2026-03-03T21:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-70236"
},
{
"type": "WEB",
"url": "https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2025-70236"
},
{
"type": "WEB",
"url": "https://www.dlink.com.cn/techsupport/ProductInfo.aspx?m=DIR-513"
},
{
"type": "WEB",
"url": "https://www.dlink.com/en/security-bulletin"
}
],
"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-79VM-XPWG-C3JG
Vulnerability from github – Published: 2022-02-09 00:00 – Updated: 2022-02-09 00:00Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetQvlanList. This vulnerability allows attackers to cause a Denial of Service (DoS) via the qvlanName parameter.
{
"affected": [],
"aliases": [
"CVE-2021-45992"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-04T02:15:00Z",
"severity": "HIGH"
},
"details": "Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetQvlanList. This vulnerability allows attackers to cause a Denial of Service (DoS) via the qvlanName parameter.",
"id": "GHSA-79vm-xpwg-c3jg",
"modified": "2022-02-09T00:00:44Z",
"published": "2022-02-09T00:00:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45992"
},
{
"type": "WEB",
"url": "https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_7/7.md"
},
{
"type": "WEB",
"url": "https://www.tenable.com/cve/CVE-2021-45992"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-79VX-5HP8-MG9F
Vulnerability from github – Published: 2024-11-28 00:39 – Updated: 2024-11-28 00:39Fuji Electric Monitouch V-SFT V10 File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fuji Electric Monitouch V-SFT. 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 V10 files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24413.
{
"affected": [],
"aliases": [
"CVE-2024-11787"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-28T00:15:04Z",
"severity": "HIGH"
},
"details": "Fuji Electric Monitouch V-SFT V10 File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fuji Electric Monitouch V-SFT. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of V10 files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24413.",
"id": "GHSA-79vx-5hp8-mg9f",
"modified": "2024-11-28T00:39:26Z",
"published": "2024-11-28T00:39:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-11787"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1614"
}
],
"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-79W2-WWVG-2JF6
Vulnerability from github – Published: 2022-05-24 19:07 – Updated: 2022-05-24 19:07A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Tiff_loader.dll library in affected applications lacks proper validation of user-supplied data when parsing TIFF files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13350)
{
"affected": [],
"aliases": [
"CVE-2021-34309"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-13T11:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in JT2Go (All versions \u003c V13.2), Teamcenter Visualization (All versions \u003c V13.2). The Tiff_loader.dll library in affected applications lacks proper validation of user-supplied data when parsing TIFF files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13350)",
"id": "GHSA-79w2-wwvg-2jf6",
"modified": "2022-05-24T19:07:40Z",
"published": "2022-05-24T19:07:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34309"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-838"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-79X3-QM38-CPCX
Vulnerability from github – Published: 2023-08-07 06:30 – Updated: 2024-04-04 06:35In hcp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07340433; Issue ID: ALPS07537437.
{
"affected": [],
"aliases": [
"CVE-2023-20806"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-07T04:15:14Z",
"severity": "MODERATE"
},
"details": "In hcp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07340433; Issue ID: ALPS07537437.",
"id": "GHSA-79x3-qm38-cpcx",
"modified": "2024-04-04T06:35:12Z",
"published": "2023-08-07T06:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20806"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/August-2023"
}
],
"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-79XQ-C7XR-29JH
Vulnerability from github – Published: 2022-05-13 01:20 – Updated: 2023-10-06 01:18A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8542, CVE-2018-8543, CVE-2018-8551, CVE-2018-8555, CVE-2018-8556, CVE-2018-8557, CVE-2018-8588.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-8541"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-21T19:12:32Z",
"nvd_published_at": "2018-11-14T01:29:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka \"Chakra Scripting Engine Memory Corruption Vulnerability.\" This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8542, CVE-2018-8543, CVE-2018-8551, CVE-2018-8555, CVE-2018-8556, CVE-2018-8557, CVE-2018-8588.",
"id": "GHSA-79xq-c7xr-29jh",
"modified": "2023-10-06T01:18:13Z",
"published": "2022-05-13T01:20:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8541"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/pull/5827"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/3bee8f018e15c803d87d8b2981d0522f6d58ecac"
},
{
"type": "PACKAGE",
"url": "https://github.com/chakra-core/ChakraCore"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8541"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20210124213905/http://www.securityfocus.com/bid/105771"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20211126224439/http://www.securitytracker.com/id/1042107"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "ChakraCore RCE Vulnerability"
}
GHSA-7C2J-9GCG-5GGW
Vulnerability from github – Published: 2023-10-13 00:30 – Updated: 2024-04-04 08:36A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service.
Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition.
This issue affects Juniper Networks:
Junos OS
- All versions prior to 19.1R3-S10;
- 19.2 versions prior to 19.2R3-S7;
- 19.3 versions prior to 19.3R3-S8;
- 19.4 versions prior to 19.4R3-S12;
- 20.2 versions prior to 20.2R3-S8;
- 20.4 versions prior to 20.4R3-S8;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S5;
- 22.1 versions prior to 22.1R3-S3;
- 22.2 versions prior to 22.2R3-S2;
- 22.3 versions prior to 22.3R3-S1;
- 22.4 versions prior to 22.4R2-S1;
- 23.2 versions prior to 23.2R2.
{
"affected": [],
"aliases": [
"CVE-2023-44178"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-13T00:15:11Z",
"severity": "MODERATE"
},
"details": "\nA Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service.\n\nRepeated actions by the attacker will create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks:\n\nJunos OS\n\n\n\n * All versions prior to 19.1R3-S10;\n * 19.2 versions prior to 19.2R3-S7;\n * 19.3 versions prior to 19.3R3-S8;\n * 19.4 versions prior to 19.4R3-S12;\n * 20.2 versions prior to 20.2R3-S8;\n * 20.4 versions prior to 20.4R3-S8;\n * 21.2 versions prior to 21.2R3-S6;\n * 21.3 versions prior to 21.3R3-S5;\n * 21.4 versions prior to 21.4R3-S5;\n * 22.1 versions prior to 22.1R3-S3;\n * 22.2 versions prior to 22.2R3-S2;\n * 22.3 versions prior to 22.3R3-S1;\n * 22.4 versions prior to 22.4R2-S1;\n * 23.2 versions prior to 23.2R2.\n\n\n\n\n\n\n",
"id": "GHSA-7c2j-9gcg-5ggw",
"modified": "2024-04-04T08:36:41Z",
"published": "2023-10-13T00:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44178"
},
{
"type": "WEB",
"url": "https://supportportal.juniper.net/JSA73140"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.