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.
15187 vulnerabilities reference this CWE, most recent first.
GHSA-RR8M-C39G-G72X
Vulnerability from github – Published: 2023-08-23 03:30 – Updated: 2024-03-21 03:35
VLAI
Details
** UNSUPPPORTED WHEN ASSIGNED ** ** UNSUPPORTED WHEN ASSIGNED ** Out-of-bounds Write vulnerability in Hitachi EH-VIEW (KeypadDesigner) allows local attackers to potentially execute arbitray code on affected EH-VIEW installations. User interaction is required to exploit the vulnerabilities in that the user must open a malicious file. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-3495"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-23T02:15:08Z",
"severity": "HIGH"
},
"details": "** UNSUPPPORTED WHEN ASSIGNED ** ** UNSUPPORTED WHEN ASSIGNED ** Out-of-bounds Write vulnerability in Hitachi EH-VIEW (KeypadDesigner) allows local attackers to potentially execute arbitray code on affected EH-VIEW installations. User interaction is required to exploit the vulnerabilities in that the user must open a malicious file. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.\n",
"id": "GHSA-rr8m-c39g-g72x",
"modified": "2024-03-21T03:35:41Z",
"published": "2023-08-23T03:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3495"
},
{
"type": "WEB",
"url": "https://www.hitachi.com/hirt/hitachi-sec/2023/002.html"
}
],
"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-RR8Q-HJPQ-9WX8
Vulnerability from github – Published: 2023-01-03 21:30 – Updated: 2023-01-10 03:30
VLAI
Details
In meta wifi, 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: ALPS07441652; Issue ID: ALPS07441652.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-32640"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-03T21:15:00Z",
"severity": "MODERATE"
},
"details": "In meta wifi, 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: ALPS07441652; Issue ID: ALPS07441652.",
"id": "GHSA-rr8q-hjpq-9wx8",
"modified": "2023-01-10T03:30:28Z",
"published": "2023-01-03T21:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32640"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/January-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-RR98-PCCV-8M4W
Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2022-05-24 17:43
VLAI
Details
ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.19.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code.
{
"affected": [],
"aliases": [
"CVE-2021-27799"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-26T22:15:00Z",
"severity": "HIGH"
},
"details": "ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.19.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code.",
"id": "GHSA-rr98-pccv-8m4w",
"modified": "2022-05-24T17:43:20Z",
"published": "2022-05-24T17:43:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27799"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/zint/tickets/218"
},
{
"type": "WEB",
"url": "http://zint.org.uk/Manual.aspx?type=p\u0026page=3"
},
{
"type": "WEB",
"url": "http://zint.org.uk/Manual.aspx?type=p\u0026page=4"
},
{
"type": "WEB",
"url": "http://zint.org.uk/Manual.aspx?type=p\u0026page=5"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-RR9H-8V7W-6V77
Vulnerability from github – Published: 2026-04-05 21:30 – Updated: 2026-04-05 21:30
VLAI
Details
IP TOOLS 2.50 contains a local buffer overflow vulnerability in the SNMP Scanner component that allows local attackers to crash the application by supplying oversized input. Attackers can paste malicious data into the 'From Addr' and 'To Addr' fields and trigger the crash by clicking the Start button, causing denial of service and SEH overwrite.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2018-25256"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-05T21:16:41Z",
"severity": "MODERATE"
},
"details": "IP TOOLS 2.50 contains a local buffer overflow vulnerability in the SNMP Scanner component that allows local attackers to crash the application by supplying oversized input. Attackers can paste malicious data into the \u0027From Addr\u0027 and \u0027To Addr\u0027 fields and trigger the crash by clicking the Start button, causing denial of service and SEH overwrite.",
"id": "GHSA-rr9h-8v7w-6v77",
"modified": "2026-04-05T21:30:19Z",
"published": "2026-04-05T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-25256"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/46286"
},
{
"type": "WEB",
"url": "https://www.ks-soft.net/ip-tools.eng/index.htm"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/ip-tools-local-buffer-overflow-denial-of-service"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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-RR9P-8245-3F99
Vulnerability from github – Published: 2026-04-11 03:30 – Updated: 2026-06-30 03:36
VLAI
Details
GIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. 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 PSP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28874.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-4153"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-11T01:16:16Z",
"severity": "HIGH"
},
"details": "GIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. 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 PSP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28874.",
"id": "GHSA-rr9p-8245-3f99",
"modified": "2026-06-30T03:36:16Z",
"published": "2026-04-11T03:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4153"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-220"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4153.json"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/gimp/-/commit/98cb1371fd4e22cca75017ea3252dc32fc218712"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457536"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-4153"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:26168"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25907"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25901"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:25899"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20691"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20554"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20553"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:20552"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19362"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:17533"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:16484"
}
],
"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-RRC2-M8V6-JH7Q
Vulnerability from github – Published: 2025-03-10 15:30 – Updated: 2025-03-10 15:30
VLAI
Details
A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function Assimp::GetNextLine in the library ParsingUtils.h of the component File Handler. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Severity
6.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-2151"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-10T13:15:36Z",
"severity": "MODERATE"
},
"details": "A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function Assimp::GetNextLine in the library ParsingUtils.h of the component File Handler. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-rrc2-m8v6-jh7q",
"modified": "2025-03-10T15:30:47Z",
"published": "2025-03-10T15:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2151"
},
{
"type": "WEB",
"url": "https://github.com/assimp/assimp/issues/6016"
},
{
"type": "WEB",
"url": "https://github.com/assimp/assimp/issues/6026"
},
{
"type": "WEB",
"url": "https://github.com/sae-as-me/Crashes/raw/refs/heads/main/assimp/assimp_crash_1"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.299062"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.299062"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.510582"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/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-RRCM-C7W6-X9MR
Vulnerability from github – Published: 2026-03-12 09:31 – Updated: 2026-03-12 09:31
VLAI
Details
A vulnerability was detected in Tenda W3 1.0.0.3(2204). This vulnerability affects unknown code of the file /goform/wifiSSIDget of the component POST Parameter Handler. Performing a manipulation of the argument index results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-4007"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-12T07:16:18Z",
"severity": "HIGH"
},
"details": "A vulnerability was detected in Tenda W3 1.0.0.3(2204). This vulnerability affects unknown code of the file /goform/wifiSSIDget of the component POST Parameter Handler. Performing a manipulation of the argument index results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used.",
"id": "GHSA-rrcm-c7w6-x9mr",
"modified": "2026-03-12T09:31:32Z",
"published": "2026-03-12T09:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4007"
},
{
"type": "WEB",
"url": "https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-formwrlSSIDget-index-buffer-overflow"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.350530"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.350530"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.769181"
},
{
"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-RRF2-6593-Q6JH
Vulnerability from github – Published: 2023-11-20 21:31 – Updated: 2024-08-29 21:31
VLAI
Details
Tenda AX1803 v1.0.0.1 was discovered to contain a heap overflow via the urls parameter in the function saveParentControlInfo . This vulnerability allows attackers to cause a Denial of Service (DoS) attack
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2023-48110"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-20T20:15:07Z",
"severity": "HIGH"
},
"details": "Tenda AX1803 v1.0.0.1 was discovered to contain a heap overflow via the urls parameter in the function saveParentControlInfo . This vulnerability allows attackers to cause a Denial of Service (DoS) attack",
"id": "GHSA-rrf2-6593-q6jh",
"modified": "2024-08-29T21:31:00Z",
"published": "2023-11-20T21:31:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48110"
},
{
"type": "WEB",
"url": "http://tjr181.com/index.php/archives/13"
}
],
"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-RRJ7-QM3X-W26V
Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-05-24 17:49
VLAI
Details
A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-20294"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-29T16:15:00Z",
"severity": "HIGH"
},
"details": "A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.",
"id": "GHSA-rrj7-qm3x-w26v",
"modified": "2022-05-24T17:49:16Z",
"published": "2022-05-24T17:49:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20294"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1943533"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-30"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=26929"
},
{
"type": "WEB",
"url": "https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926"
}
],
"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-RRJF-CCR2-PH7G
Vulnerability from github – Published: 2026-04-07 15:30 – Updated: 2026-06-30 03:36
VLAI
Details
Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 < 149.0.2.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-5735"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-07T13:16:47Z",
"severity": "CRITICAL"
},
"details": "Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 149.0.2.",
"id": "GHSA-rrjf-ccr2-ph7g",
"modified": "2026-06-30T03:36:09Z",
"published": "2026-04-07T15:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5735"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-5735"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2025475%2C2025477"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455904"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5735.json"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-25"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-28"
}
],
"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"
}
]
}
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.