Common Weakness Enumeration

CWE-119

Discouraged

Improper Restriction of Operations within the Bounds of a Memory Buffer

Abstraction: Class · Status: Stable

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

17499 vulnerabilities reference this CWE, most recent first.

GHSA-5F4H-MQ48-HHQ9

Vulnerability from github – Published: 2022-05-17 03:40 – Updated: 2022-05-17 03:40
VLAI
Details

epan/dissectors/packet-wbxml.c in the WBXML dissector in Wireshark 1.12.x before 1.12.12 mishandles offsets, which allows remote attackers to cause a denial of service (integer overflow and infinite loop) via a crafted packet.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2016-5359"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-08-07T16:59:00Z",
    "severity": "MODERATE"
  },
  "details": "epan/dissectors/packet-wbxml.c in the WBXML dissector in Wireshark 1.12.x before 1.12.12 mishandles offsets, which allows remote attackers to cause a denial of service (integer overflow and infinite loop) via a crafted packet.",
  "id": "GHSA-5f4h-mq48-hhq9",
  "modified": "2022-05-17T03:40:37Z",
  "published": "2022-05-17T03:40:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-5359"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wireshark/wireshark/commit/b8e0d416898bb975a02c1b55883342edc5b4c9c0"
    },
    {
      "type": "WEB",
      "url": "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12408"
    },
    {
      "type": "WEB",
      "url": "https://www.wireshark.org/security/wnpa-sec-2016-38.html"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2016/dsa-3615"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/06/09/3"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/91140"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5F4X-WP5F-727X

Vulnerability from github – Published: 2022-05-14 01:16 – Updated: 2022-05-14 01:16
VLAI
Details

XnView MP 0.93.1 on Windows allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, related to ntdll!RtlFreeHeap.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2019-9963"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-03-24T02:29:00Z",
    "severity": "HIGH"
  },
  "details": "XnView MP 0.93.1 on Windows allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, related to ntdll!RtlFreeHeap.",
  "id": "GHSA-5f4x-wp5f-727x",
  "modified": "2022-05-14T01:16:00Z",
  "published": "2022-05-14T01:16:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9963"
    },
    {
      "type": "WEB",
      "url": "https://code610.blogspot.com/2019/03/crashing-xnview-248.html"
    }
  ],
  "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-5F59-85HR-W8Q2

Vulnerability from github – Published: 2022-05-17 00:32 – Updated: 2022-05-17 00:32
VLAI
Details

In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, in compatibility mode, flash_data from 64-bit userspace may cause disclosure of kernel memory or a fault due to using a userspace-provided address.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2017-11057"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-10-10T20:29:00Z",
    "severity": "HIGH"
  },
  "details": "In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, in compatibility mode, flash_data from 64-bit userspace may cause disclosure of kernel memory or a fault due to using a userspace-provided address.",
  "id": "GHSA-5f59-85hr-w8q2",
  "modified": "2022-05-17T00:32:28Z",
  "published": "2022-05-17T00:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11057"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2017-10-01"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/101160"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5F59-WQ77-4WM6

Vulnerability from github – Published: 2022-05-13 01:53 – Updated: 2022-05-13 01:53
VLAI
Details

An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user's computer or data, aka "Windows Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-8552"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-11-14T01:29:00Z",
    "severity": "HIGH"
  },
  "details": "An information disclosure vulnerability exists when VBScript improperly discloses the contents of its memory, which could provide an attacker with information to further compromise the user\u0027s computer or data, aka \"Windows Scripting Engine Memory Corruption Vulnerability.\" This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10.",
  "id": "GHSA-5f59-wq77-4wm6",
  "modified": "2022-05-13T01:53:44Z",
  "published": "2022-05-13T01:53:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8552"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8552"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/45924"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/105786"
    }
  ],
  "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"
    }
  ]
}

GHSA-5F5R-65PM-R3WR

Vulnerability from github – Published: 2022-05-17 00:11 – Updated: 2023-07-27 19:49
VLAI
Summary
ChakraCore RCE Vulnerability
Details

ChakraCore allows an attacker to execute arbitrary code in the context of the current user, due to how the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11918, and CVE-2017-11930.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.ChakraCore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-11916"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-27T19:49:30Z",
    "nvd_published_at": "2017-12-12T21:29:00Z",
    "severity": "HIGH"
  },
  "details": "ChakraCore allows an attacker to execute arbitrary code in the context of the current user, due to how the ChakraCore scripting engine handles objects in memory, aka \"Scripting Engine Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11918, and CVE-2017-11930.",
  "id": "GHSA-5f5r-65pm-r3wr",
  "modified": "2023-07-27T19:49:30Z",
  "published": "2022-05-17T00:11:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11916"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chakra-core/ChakraCore/pull/4411"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chakra-core/ChakraCore/commit/69e03c35543d2bf3befce6885d78cd751bf5db10"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11916"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20210124122737/http://www.securityfocus.com/bid/102090"
    }
  ],
  "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-5F69-J422-38P4

Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2022-05-24 17:43
VLAI
Details

In ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-3404"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-04T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "In ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.",
  "id": "GHSA-5f69-j422-38p4",
  "modified": "2022-05-24T17:43:42Z",
  "published": "2022-05-24T17:43:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3404"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Yeraze/ytnef/issues/86"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1926965"
    }
  ],
  "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-5F6V-RCR8-2JP3

Vulnerability from github – Published: 2025-07-11 00:30 – Updated: 2025-07-11 00:30
VLAI
Details

A vulnerability, which was classified as critical, was found in Tenda O3V2 1.0.0.12(3880). Affected is the function fromSysToolTime of the file /goform/setSysTimeInfo of the component httpd. The manipulation of the argument Time leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-7416"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T22:15:24Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability, which was classified as critical, was found in Tenda O3V2 1.0.0.12(3880). Affected is the function fromSysToolTime of the file /goform/setSysTimeInfo of the component httpd. The manipulation of the argument Time leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.",
  "id": "GHSA-5f6v-rcr8-2jp3",
  "modified": "2025-07-11T00:30:32Z",
  "published": "2025-07-11T00:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7416"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_49/49.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wudipjq/my_vuln/blob/main/Tenda3/vuln_49/49.md#poc"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.315876"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.315876"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.608857"
    },
    {
      "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"
    }
  ]
}

GHSA-5F6X-GJGM-PQX4

Vulnerability from github – Published: 2026-05-29 18:31 – Updated: 2026-05-29 18:31
VLAI
Details

A security vulnerability has been detected in Shibby Tomato up to 1.28. This issue affects the function sub_9068 of the file tomatoups.cgi of the component UPS Service. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. This project is superseded by FreshTomato. This vulnerability only affects products that are no longer supported by the maintainer.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-10066"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-29T16:16:23Z",
    "severity": "HIGH"
  },
  "details": "A security vulnerability has been detected in Shibby Tomato up to 1.28. This issue affects the function sub_9068 of the file tomatoups.cgi of the component UPS Service. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. This project is superseded by FreshTomato. This vulnerability only affects products that are no longer supported by the maintainer.",
  "id": "GHSA-5f6x-gjgm-pqx4",
  "modified": "2026-05-29T18:31:32Z",
  "published": "2026-05-29T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10066"
    },
    {
      "type": "WEB",
      "url": "https://gitee.com/Fengyi-Wang/CVE/issues/IJK7BD"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/818145"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367152"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367152/cti"
    }
  ],
  "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: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-5F76-QG5W-X9VH

Vulnerability from github – Published: 2025-08-10 18:30 – Updated: 2025-08-10 18:30
VLAI
Details

A vulnerability was determined in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected is the function setOpMode of the file /goform/setOpMode. The manipulation of the argument ethConv leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-8816"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-10T16:15:27Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability was determined in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. Affected is the function setOpMode of the file /goform/setOpMode. The manipulation of the argument ethConv leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
  "id": "GHSA-5f76-qg5w-x9vh",
  "modified": "2025-08-10T18:30:24Z",
  "published": "2025-08-10T18:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8816"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys1/vuln_50/50.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys1/vuln_50/50.md#poc"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.319350"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.319350"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.626680"
    },
    {
      "type": "WEB",
      "url": "https://www.linksys.com"
    }
  ],
  "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"
    }
  ]
}

GHSA-5F7Q-RVPQ-5XWV

Vulnerability from github – Published: 2022-05-24 17:08 – Updated: 2022-05-24 17:08
VLAI
Details

A remote code execution vulnerability exists in the way that Windows handles objects in memory, aka 'Windows Remote Code Execution Vulnerability'.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-0662"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-02-11T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "A remote code execution vulnerability exists in the way that Windows handles objects in memory, aka \u0027Windows Remote Code Execution Vulnerability\u0027.",
  "id": "GHSA-5f7q-rvpq-5xwv",
  "modified": "2022-05-24T17:08:24Z",
  "published": "2022-05-24T17:08:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0662"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0662"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

CAPEC-10: Buffer Overflow via Environment Variables

This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.

CAPEC-100: Overflow Buffers

Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.

CAPEC-123: Buffer Manipulation

An adversary manipulates an application's interaction with a buffer in an attempt to read or modify data they shouldn't have access to. Buffer attacks are distinguished in that it is the buffer space itself that is the target of the attack rather than any code responsible for interpreting the content of the buffer. In virtually all buffer attacks the content that is placed in the buffer is immaterial. Instead, most buffer attacks involve retrieving or providing more input than can be stored in the allocated buffer, resulting in the reading or overwriting of other unintended program memory.

CAPEC-14: Client-side Injection-induced Buffer Overflow

This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service. This hostile service is created to deliver the correct content to the client software. For example, if the client-side application is a browser, the service will host a webpage that the browser loads.

CAPEC-24: Filter Failure through Buffer Overflow

In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).

CAPEC-42: MIME Conversion

An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

CAPEC-44: Overflow Binary Resource File

An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the adversary access to the execution stack and execute arbitrary code in the target process.

CAPEC-45: Buffer Overflow via Symbolic Links

This type of attack leverages the use of symbolic links to cause buffer overflows. An adversary can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.

CAPEC-46: Overflow Variables and Tags

This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The adversary crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.

CAPEC-47: Buffer Overflow via Parameter Expansion

In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.

CAPEC-8: Buffer Overflow in an API Call

This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An adversary who has knowledge of known vulnerable libraries or shared code can easily target software that makes use of these libraries. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.

CAPEC-9: Buffer Overflow in Local Command-Line Utilities

This attack targets command-line utilities available in a number of shells. An adversary can leverage a vulnerability found in a command-line utility to escalate privilege to root.