Common Weakness Enumeration
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.
16845 vulnerabilities reference this CWE, most recent first.
GHSA-CWG6-433X-8J82
Vulnerability from github – Published: 2022-05-24 19:14 – Updated: 2026-08-10 18:31
VLAI
Details
Windows Scripting Engine Memory Corruption Vulnerability
Severity
8.1 (High)
{
"affected": [],
"aliases": [
"CVE-2021-26435"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-15T12:15:00Z",
"severity": "HIGH"
},
"details": "Windows Scripting Engine Memory Corruption Vulnerability",
"id": "GHSA-cwg6-433x-8j82",
"modified": "2026-08-10T18:31:01Z",
"published": "2022-05-24T19:14:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26435"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26435"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26435"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-CWGJ-PQ49-6X66
Vulnerability from github – Published: 2024-11-24 18:31 – Updated: 2024-11-24 21:30
VLAI
Details
The Imager package before 1.025 for Perl has a heap-based buffer overflow leading to denial of service, or possibly unspecified other impact, when the trim() method is called on a crafted input image.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-53901"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-24T17:15:04Z",
"severity": "MODERATE"
},
"details": "The Imager package before 1.025 for Perl has a heap-based buffer overflow leading to denial of service, or possibly unspecified other impact, when the trim() method is called on a crafted input image.",
"id": "GHSA-cwgj-pq49-6x66",
"modified": "2024-11-24T21:30:46Z",
"published": "2024-11-24T18:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53901"
},
{
"type": "WEB",
"url": "https://github.com/briandfoy/cpan-security-advisory/issues/167"
},
{
"type": "WEB",
"url": "https://github.com/briandfoy/cpan-security-advisory/issues/171"
},
{
"type": "WEB",
"url": "https://github.com/tonycoz/imager/issues/534"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/TONYC/Imager-1.025/changes"
}
],
"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-CWGP-8P97-CF77
Vulnerability from github – Published: 2026-05-07 09:31 – Updated: 2026-05-08 18:31
VLAI
Details
Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters.
This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-4430"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-07T08:16:00Z",
"severity": "MODERATE"
},
"details": "Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters.\n\nThis issue affects\u00a0LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.",
"id": "GHSA-cwgp-8p97-cf77",
"modified": "2026-05-08T18:31:28Z",
"published": "2026-05-07T09:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4430"
},
{
"type": "WEB",
"url": "https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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"
}
]
}
GHSA-CWJR-HG9P-WQ55
Vulnerability from github – Published: 2023-05-31 21:31 – Updated: 2024-04-04 04:27
VLAI
Details
H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the ipqos_lanip_editlist interface at /goform/aspForm.
Severity
7.2 (High)
{
"affected": [],
"aliases": [
"CVE-2023-33636"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-31T21:15:09Z",
"severity": "HIGH"
},
"details": "H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the ipqos_lanip_editlist interface at /goform/aspForm.",
"id": "GHSA-cwjr-hg9p-wq55",
"modified": "2024-04-04T04:27:04Z",
"published": "2023-05-31T21:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33636"
},
{
"type": "WEB",
"url": "https://hackmd.io/%400dayResearch/HyX6mgWz2"
},
{
"type": "WEB",
"url": "https://hackmd.io/@0dayResearch/HyX6mgWz2"
}
],
"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-CWM8-XJ6V-VQWJ
Vulnerability from github – Published: 2022-05-24 17:14 – Updated: 2022-11-15 12:00
VLAI
Details
An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds write in copyIntoFrameBuffer in ImfMisc.cpp.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-11764"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-04-14T23:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds write in copyIntoFrameBuffer in ImfMisc.cpp.",
"id": "GHSA-cwm8-xj6v-vqwj",
"modified": "2022-11-15T12:00:18Z",
"published": "2022-05-24T17:14:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11764"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1987"
},
{
"type": "WEB",
"url": "https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020"
},
{
"type": "WEB",
"url": "https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00056.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202107-27"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211288"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211289"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211290"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211291"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211293"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211294"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT211295"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4339-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4755"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00051.html"
}
],
"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-CWMF-5X7W-G67F
Vulnerability from github – Published: 2022-08-29 20:06 – Updated: 2022-09-02 00:01
VLAI
Details
Advancecomp v2.3 was discovered to contain a heap buffer overflow.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-35016"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-29T14:15:00Z",
"severity": "MODERATE"
},
"details": "Advancecomp v2.3 was discovered to contain a heap buffer overflow.",
"id": "GHSA-cwmf-5x7w-g67f",
"modified": "2022-09-02T00:01:15Z",
"published": "2022-08-29T20:06:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35016"
},
{
"type": "WEB",
"url": "https://drive.google.com/file/d/1oWVhoJJih6-pgbvrZsx5oFUtv-vgR0fF/view?usp=sharing"
},
{
"type": "WEB",
"url": "https://github.com/Cvjark/Poc/blob/main/advancecomp/CVE-2022-35016.md"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DYG2XAL4MBS7ADGJWYRUKBLDTBJFPJER"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQHLMLFHPV5C7PTBZML6U72QT6VNEOEF"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XP42AC5VPTY45QKMRL3W4G4EXIUMFXRE"
}
],
"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-CWMQ-QJMW-V5M6
Vulnerability from github – Published: 2026-10-12 06:31 – Updated: 2026-10-12 06:31
VLAI
Details
Out-of-bounds write in libsmkvextractor.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-21116"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-12T05:17:00Z",
"severity": "MODERATE"
},
"details": "Out-of-bounds write in libsmkvextractor.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.",
"id": "GHSA-cwmq-qjmw-v5m6",
"modified": "2026-10-12T06:31:15Z",
"published": "2026-10-12T06:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21116"
},
{
"type": "WEB",
"url": "https://security.samsungmobile.com/securityUpdate.smsb?year=2026\u0026month=10"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/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-CWP8-W54M-69Q2
Vulnerability from github – Published: 2022-05-11 00:01 – Updated: 2022-05-17 00:01
VLAI
Details
D-Link DAP-1330_OSS-firmware_1.00b21 was discovered to contain a heap overflow via the devicename parameter in /goform/setDeviceSettings.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2022-29329"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-10T14:15:00Z",
"severity": "CRITICAL"
},
"details": "D-Link DAP-1330_OSS-firmware_1.00b21 was discovered to contain a heap overflow via the devicename parameter in /goform/setDeviceSettings.",
"id": "GHSA-cwp8-w54m-69q2",
"modified": "2022-05-17T00:01:06Z",
"published": "2022-05-11T00:01:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-29329"
},
{
"type": "WEB",
"url": "https://github.com/EPhaha/IOT_vuln/tree/main/d-link/dap-1330/2"
},
{
"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-CWP9-956F-VCWH
Vulnerability from github – Published: 2021-03-29 20:57 – Updated: 2024-05-31 20:40
VLAI
Summary
Out-of-bounds write in Microsoft.ChakraCore
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 CVE ID is unique from CVE-2019-1131, CVE-2019-1139, CVE-2019-1140, CVE-2019-1195, CVE-2019-1196, CVE-2019-1197.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.12"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-1141"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-22T22:56:04Z",
"nvd_published_at": "2019-08-14T21:15:00Z",
"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 \u0027Chakra Scripting Engine Memory Corruption Vulnerability\u0027. This CVE ID is unique from CVE-2019-1131, CVE-2019-1139, CVE-2019-1140, CVE-2019-1195, CVE-2019-1196, CVE-2019-1197.",
"id": "GHSA-cwp9-956f-vcwh",
"modified": "2024-05-31T20:40:02Z",
"published": "2021-03-29T20:57:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1141"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/329d9d213e7b286349c0b156be4b5a088555de90"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/6b1250b6ffea7006226dd937e52cf5b353fcfc15"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1141"
}
],
"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": "Out-of-bounds write in Microsoft.ChakraCore"
}
GHSA-CWPJ-WXFP-CRC5
Vulnerability from github – Published: 2024-04-02 09:30 – Updated: 2025-03-17 18:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
x86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups
During memory error injection test on kernels >= v6.4, the kernel panics like below. However, this issue couldn't be reproduced on kernels <= v6.3.
mce: [Hardware Error]: CPU 296: Machine Check Exception: f Bank 1: bd80000000100134 mce: [Hardware Error]: RIP 10: {__get_user_nocheck_4+0x6/0x20} mce: [Hardware Error]: TSC 411a93533ed ADDR 346a8730040 MISC 86 mce: [Hardware Error]: PROCESSOR 0:a06d0 TIME 1706000767 SOCKET 1 APIC 211 microcode 80001490 mce: [Hardware Error]: Run the above through 'mcelog --ascii' mce: [Hardware Error]: Machine check: Data load in unrecoverable area of kernel Kernel panic - not syncing: Fatal local machine check
The MCA code can recover from an in-kernel #MC if the fixup type is EX_TYPE_UACCESS, explicitly indicating that the kernel is attempting to access userspace memory. However, if the fixup type is EX_TYPE_DEFAULT the only thing that is raised for an in-kernel #MC is a panic.
ex_handler_uaccess() would warn if users gave a non-canonical addresses (with bit 63 clear) to {get, put}_user(), which was unexpected.
Therefore, commit
b19b74bc99b1 ("x86/mm: Rework address range check in get_user() and put_user()")
replaced _ASM_EXTABLE_UA() with _ASM_EXTABLE() for {get, put}_user() fixups. However, the new fixup type EX_TYPE_DEFAULT results in a panic.
Commit
6014bc27561f ("x86-64: make access_ok() independent of LAM")
added the check gp_fault_address_ok() right before the WARN_ONCE() in ex_handler_uaccess() to not warn about non-canonical user addresses due to LAM.
With that in place, revert back to _ASM_EXTABLE_UA() for {get,put}_user() exception fixups in order to be able to handle in-kernel MCEs correctly again.
[ bp: Massage commit message. ]
Severity
7.1 (High)
{
"affected": [],
"aliases": [
"CVE-2024-26674"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T07:15:44Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups\n\nDuring memory error injection test on kernels \u003e= v6.4, the kernel panics\nlike below. However, this issue couldn\u0027t be reproduced on kernels \u003c= v6.3.\n\n mce: [Hardware Error]: CPU 296: Machine Check Exception: f Bank 1: bd80000000100134\n mce: [Hardware Error]: RIP 10:\u003cffffffff821b9776\u003e {__get_user_nocheck_4+0x6/0x20}\n mce: [Hardware Error]: TSC 411a93533ed ADDR 346a8730040 MISC 86\n mce: [Hardware Error]: PROCESSOR 0:a06d0 TIME 1706000767 SOCKET 1 APIC 211 microcode 80001490\n mce: [Hardware Error]: Run the above through \u0027mcelog --ascii\u0027\n mce: [Hardware Error]: Machine check: Data load in unrecoverable area of kernel\n Kernel panic - not syncing: Fatal local machine check\n\nThe MCA code can recover from an in-kernel #MC if the fixup type is\nEX_TYPE_UACCESS, explicitly indicating that the kernel is attempting to\naccess userspace memory. However, if the fixup type is EX_TYPE_DEFAULT\nthe only thing that is raised for an in-kernel #MC is a panic.\n\nex_handler_uaccess() would warn if users gave a non-canonical addresses\n(with bit 63 clear) to {get, put}_user(), which was unexpected.\n\nTherefore, commit\n\n b19b74bc99b1 (\"x86/mm: Rework address range check in get_user() and put_user()\")\n\nreplaced _ASM_EXTABLE_UA() with _ASM_EXTABLE() for {get, put}_user()\nfixups. However, the new fixup type EX_TYPE_DEFAULT results in a panic.\n\nCommit\n\n 6014bc27561f (\"x86-64: make access_ok() independent of LAM\")\n\nadded the check gp_fault_address_ok() right before the WARN_ONCE() in\nex_handler_uaccess() to not warn about non-canonical user addresses due\nto LAM.\n\nWith that in place, revert back to _ASM_EXTABLE_UA() for {get,put}_user()\nexception fixups in order to be able to handle in-kernel MCEs correctly\nagain.\n\n [ bp: Massage commit message. ]",
"id": "GHSA-cwpj-wxfp-crc5",
"modified": "2025-03-17T18:31:38Z",
"published": "2024-04-02T09:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26674"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2aed1b6c33afd8599d01c6532bbecb829480a674"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2da241c5ed78d0978228a1150735539fe1a60eca"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8eed4e00a370b37b4e5985ed983dccedd555ea9d"
}
],
"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"
}
]
}
Mitigation MIT-3
Requirements
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
Architecture and Design
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
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-9
Implementation
- 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
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 MIT-12
Operation
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
Implementation
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.