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.
15134 vulnerabilities reference this CWE, most recent first.
GHSA-W9XM-H8J7-2CHV
Vulnerability from github – Published: 2024-12-02 15:31 – Updated: 2025-11-04 00:32
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ima: fix buffer overrun in ima_eventdigest_init_common
Function ima_eventdigest_init() calls ima_eventdigest_init_common() with HASH_ALGO__LAST which is then used to access the array hash_digest_size[] leading to buffer overrun. Have a conditional statement to handle this.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-53106"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-02T14:15:11Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: fix buffer overrun in ima_eventdigest_init_common\n\nFunction ima_eventdigest_init() calls ima_eventdigest_init_common()\nwith HASH_ALGO__LAST which is then used to access the array\nhash_digest_size[] leading to buffer overrun. Have a conditional\nstatement to handle this.",
"id": "GHSA-w9xm-h8j7-2chv",
"modified": "2025-11-04T00:32:09Z",
"published": "2024-12-02T15:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53106"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1ecf0df5205cfb0907eb7984b8671257965a5232"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8a84765c62cc0469864e2faee43aae253ad16082"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/923168a0631bc42fffd55087b337b1b6c54dcff5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e01aae58e818503f2ffcd34c6f7dc6f90af1057e"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"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-W9XW-RQ9V-758P
Vulnerability from github – Published: 2023-06-02 18:30 – Updated: 2024-04-04 04:29
VLAI
Details
Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-23605"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-02T17:15:10Z",
"severity": "HIGH"
},
"details": "Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox \u003c 109, Thunderbird \u003c 102.7, and Firefox ESR \u003c 102.7.",
"id": "GHSA-w9xw-rq9v-758p",
"modified": "2024-04-04T04:29:47Z",
"published": "2023-06-02T18:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23605"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1764921%2C1802690%2C1806974"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-01"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-02"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-03"
}
],
"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:H",
"type": "CVSS_V3"
}
]
}
GHSA-WC43-4WVJ-C97C
Vulnerability from github – Published: 2022-05-14 02:12 – Updated: 2022-05-14 02:12
VLAI
Details
Multiple integer overflows in the (1) cvt_by_strip and (2) cvt_by_tile functions in the tiff2rgba tool in LibTIFF 4.0.6 and earlier, when -b mode is enabled, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image, which triggers an out-of-bounds write.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2016-3945"
],
"database_specific": {
"cwe_ids": [
"CWE-190",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-09-21T18:59:00Z",
"severity": "HIGH"
},
"details": "Multiple integer overflows in the (1) cvt_by_strip and (2) cvt_by_tile functions in the tiff2rgba tool in LibTIFF 4.0.6 and earlier, when -b mode is enabled, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted TIFF image, which triggers an out-of-bounds write.",
"id": "GHSA-wc43-4wvj-c97c",
"modified": "2022-05-14T02:12:43Z",
"published": "2022-05-14T02:12:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-3945"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1325093"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201701-16"
},
{
"type": "WEB",
"url": "http://bugzilla.maptools.org/show_bug.cgi?id=2545"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2016-09/msg00039.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-1546.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-1547.html"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2017/dsa-3762"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/04/08/6"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/85960"
}
],
"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-WC43-7WJ6-4GGR
Vulnerability from github – Published: 2021-08-02 17:29 – Updated: 2021-05-04 22:07
VLAI
Summary
Remote code execution in ChakraCore
Details
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-1057, CVE-2020-1172.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.22"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-1180"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-04T22:07:25Z",
"nvd_published_at": "2020-09-11T17:15:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka \u0027Scripting Engine Memory Corruption Vulnerability\u0027. This CVE ID is unique from CVE-2020-1057, CVE-2020-1172.",
"id": "GHSA-wc43-7wj6-4ggr",
"modified": "2021-05-04T22:07:25Z",
"published": "2021-08-02T17:29:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1180"
},
{
"type": "WEB",
"url": "https://github.com/microsoft/ChakraCore/pull/6500"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1180"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Remote code execution in ChakraCore"
}
GHSA-WC4C-3655-PHH6
Vulnerability from github – Published: 2022-08-17 00:00 – Updated: 2022-08-18 00:00
VLAI
Details
OTFCC v0.10.4 was discovered to contain a global overflow via /release-x64/otfccdump+0x718693.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-35472"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-16T21:15:00Z",
"severity": "MODERATE"
},
"details": "OTFCC v0.10.4 was discovered to contain a global overflow via /release-x64/otfccdump+0x718693.",
"id": "GHSA-wc4c-3655-phh6",
"modified": "2022-08-18T00:00:20Z",
"published": "2022-08-17T00:00:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35472"
},
{
"type": "WEB",
"url": "https://cvjark.github.io/2022/07/06/CVE-2022-33047"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WC4G-7QV8-83WH
Vulnerability from github – Published: 2022-09-10 00:00 – Updated: 2022-09-11 00:00
VLAI
Details
A heap-based overflow vulnerability in GetCorrectDbLanguageTypeEsPKc function in libSDKRecognitionText.spensdk.samsung.so library prior to SMR Sep-2022 Release 1 allows attacker to cause memory access fault.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-36863"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-09T15:15:00Z",
"severity": "HIGH"
},
"details": "A heap-based overflow vulnerability in GetCorrectDbLanguageTypeEsPKc function in libSDKRecognitionText.spensdk.samsung.so library prior to SMR Sep-2022 Release 1 allows attacker to cause memory access fault.",
"id": "GHSA-wc4g-7qv8-83wh",
"modified": "2022-09-11T00:00:30Z",
"published": "2022-09-10T00:00:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36863"
},
{
"type": "WEB",
"url": "https://security.samsungmobile.com/securityUpdate.smsb?year=2022\u0026month=09"
}
],
"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-WC4X-9H9P-9494
Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2023-10-05 21:02
VLAI
Summary
ChakraCore RCE Vulnerability
Details
ChakraCore and Microsoft Edge in Microsoft Windows 10 1709 allows remote code execution, due to how the Chakra scripting engine handles objects in memory, aka "Chakra Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0872, CVE-2018-0873, CVE-2018-0874, CVE-2018-0931, CVE-2018-0933, CVE-2018-0934, CVE-2018-0936, and CVE-2018-0937.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-0930"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-20T22:29:49Z",
"nvd_published_at": "2018-03-14T17:29:00Z",
"severity": "HIGH"
},
"details": "ChakraCore and Microsoft Edge in Microsoft Windows 10 1709 allows remote code execution, due to how the Chakra scripting engine handles objects in memory, aka \"Chakra Scripting Engine Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2018-0872, CVE-2018-0873, CVE-2018-0874, CVE-2018-0931, CVE-2018-0933, CVE-2018-0934, CVE-2018-0936, and CVE-2018-0937.",
"id": "GHSA-wc4x-9h9p-9494",
"modified": "2023-10-05T21:02:05Z",
"published": "2022-05-13T01:18:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0930"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/2021bcb122607abef578ef444419e4ba0a9777be"
},
{
"type": "PACKAGE",
"url": "https://github.com/chakra-core/ChakraCore"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0930"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20210124144710/http://www.securityfocus.com/bid/103272"
}
],
"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-WC52-2XWV-H7XR
Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2023-10-06 00:59
VLAI
Summary
ChakraCore RCE Vulnerability
Details
ChakraCore and Microsoft Edge in Microsoft Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the Chakra scripting engine handles objects in memory, aka "Chakra Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0872, CVE-2018-0874, CVE-2018-0930, CVE-2018-0931, CVE-2018-0933, CVE-2018-0934, CVE-2018-0936, and CVE-2018-0937.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-0873"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-20T22:37:27Z",
"nvd_published_at": "2018-03-14T17:29:00Z",
"severity": "HIGH"
},
"details": "ChakraCore and Microsoft Edge in Microsoft Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the Chakra scripting engine handles objects in memory, aka \"Chakra Scripting Engine Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2018-0872, CVE-2018-0874, CVE-2018-0930, CVE-2018-0931, CVE-2018-0933, CVE-2018-0934, CVE-2018-0936, and CVE-2018-0937.",
"id": "GHSA-wc52-2xwv-h7xr",
"modified": "2023-10-06T00:59:45Z",
"published": "2022-05-13T01:18:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0873"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/024353a0019ddd845ac889deb8b4714df2122836"
},
{
"type": "PACKAGE",
"url": "https://github.com/chakra-core/ChakraCore"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0873"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20201021051922/http://www.securitytracker.com/id/1040507"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20210124144654/http://www.securityfocus.com/bid/103268"
}
],
"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-WC63-RVQH-4RVX
Vulnerability from github – Published: 2024-11-23 03:31 – Updated: 2024-11-23 03:31
VLAI
Details
IrfanView SID File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 SID 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-23283.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-9261"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T22:15:22Z",
"severity": "HIGH"
},
"details": "IrfanView SID File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 SID 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-23283.",
"id": "GHSA-wc63-rvqh-4rvx",
"modified": "2024-11-23T03:31:59Z",
"published": "2024-11-23T03:31:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9261"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1374"
}
],
"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-WC67-4CG3-35WF
Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2023-10-06 01:41
VLAI
Summary
ChakraCore RCE Vulnerability
Details
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka "Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0945, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-1022, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137, CVE-2018-8139.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-0946"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-20T22:18:01Z",
"nvd_published_at": "2018-05-09T19:29:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka \"Scripting Engine Memory Corruption Vulnerability.\" This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0945, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-1022, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137, CVE-2018-8139.",
"id": "GHSA-wc67-4cg3-35wf",
"modified": "2023-10-06T01:41:01Z",
"published": "2022-05-13T01:18:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0946"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/bee1e247bf6acbc8c862c7fc1d597ce9cab7446e"
},
{
"type": "PACKAGE",
"url": "https://github.com/chakra-core/ChakraCore"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0946"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20210125210449/https://www.securityfocus.com/bid/103989"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20211204185256/http://www.securitytracker.com/id/1040844"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/44758"
}
],
"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"
}
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.