CWE-787
Weakness 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.
Dimensions
- Behavior-Type: Write
- Resource-Type: Memory Buffer
- Resource-Property: Out-of-bounds
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities. However, closer examination is required.
While this CWE is allowed for mapping, it has more specific children that might be a better fit. Carefully read both the name and description to ensure that this mapping is appropriate. Consider the root cause errors that have led to the out-of-bounds write by examining "CanFollow" relationships for this entry.
Relationships and members
Modes of introduction
Detection methods
Automated Static Analysis
This weakness can often be detected using automated static analysis tools. Many modern tools use data flow analysis or constraint-based techniques to minimize the number of false positives.
Automated static analysis generally does not account for environmental considerations when reporting out-of-bounds memory operations. This can make it difficult for users to determine which warnings should be investigated first. For example, an analysis tool might report buffer overflows that originate from command line arguments in a program that is not expected to run with setuid or other special privileges.
Effectiveness: High
Detection techniques for buffer-related errors are more mature than for most other weakness types.
Automated Dynamic Analysis
This weakness can be detected using dynamic tools and techniques that interact with the software using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The software's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Content history
Suggested mappings to ISA/IEC 62443.
Provided diagram to improve CWE usability
updated Demonstrative_Examples
updated Relationships
updated Common_Consequences
updated Demonstrative_Examples
updated Relationships
updated Description
updated Applicable_Platforms, Demonstrative_Examples, Detection_Factors, Likelihood_of_Exploit, Observed_Examples, Potential_Mitigations, References, Relationships, Time_of_Introduction
updated Observed_Examples, Relationships
updated Observed_Examples
updated Alternate_Terms, Demonstrative_Examples, Observed_Examples, Relationships
updated Relationships
updated Demonstrative_Examples
updated Demonstrative_Examples, Potential_Mitigations, Relationships
updated Observed_Examples, Relationships
updated Applicable_Platforms
updated Alternate_Terms, Demonstrative_Examples, Description
updated Potential_Mitigations, References, Relationships, Taxonomy_Mappings
updated Mapping_Notes, Relationships, Taxonomy_Mappings
updated Demonstrative_Examples
updated Alternate_Terms, Common_Consequences, Description, Diagram, Weakness_Ordinalities
updated Observed_Examples, Relationships
updated Observed_Examples, Relationships
updated Affected_Resources, Functional_Areas, References
updated Applicable_Platforms, Detection_Factors, References, Relationships
updated Mapping_Notes
updated Dimensions, Observed_Examples, References, Relationships, Taxonomy_Mappings
17063 vulnerabilities reference this CWE, most recent first.
GHSA-VH8W-5WPH-86HM
Vulnerability from github – Published: 2024-06-13 18:31 – Updated: 2024-10-03 18:30Fuji Electric Tellus Lite V-Simulator is vulnerable to an out-of-bounds write, which could allow an attacker to manipulate memory, resulting in execution of arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2024-37022"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-13T18:15:10Z",
"severity": "HIGH"
},
"details": "Fuji Electric Tellus Lite V-Simulator is vulnerable to an out-of-bounds write, which could allow an attacker to manipulate memory, resulting in execution of arbitrary code.",
"id": "GHSA-vh8w-5wph-86hm",
"modified": "2024-10-03T18:30:35Z",
"published": "2024-06-13T18:31:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37022"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-165-14"
}
],
"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: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-VH95-QFJG-4498
Vulnerability from github – Published: 2022-05-13 01:20 – Updated: 2022-05-13 01:20A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8110, CVE-2018-8236.
{
"affected": [],
"aliases": [
"CVE-2018-8111"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-14T12:29:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka \"Microsoft Edge Memory Corruption Vulnerability.\" This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8110, CVE-2018-8236.",
"id": "GHSA-vh95-qfjg-4498",
"modified": "2022-05-13T01:20:39Z",
"published": "2022-05-13T01:20:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8111"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8111"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104335"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041097"
}
],
"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-VH9X-FPRQ-2HHJ
Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2023-10-06 01:09A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0979, CVE-2018-0980, CVE-2018-0993, CVE-2018-0994, CVE-2018-0995, CVE-2018-1019.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Microsoft.ChakraCore"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-0990"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-21T18:41:24Z",
"nvd_published_at": "2018-04-12T01:29:00Z",
"severity": "HIGH"
},
"details": "A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka \"Chakra Scripting Engine Memory Corruption Vulnerability.\" This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0979, CVE-2018-0980, CVE-2018-0993, CVE-2018-0994, CVE-2018-0995, CVE-2018-1019.",
"id": "GHSA-vh9x-fprq-2hhj",
"modified": "2023-10-06T01:09:44Z",
"published": "2022-05-13T01:18:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-0990"
},
{
"type": "WEB",
"url": "https://github.com/chakra-core/ChakraCore/commit/91dc6f8599979f2beba46e329be70f0788fa0889"
},
{
"type": "PACKAGE",
"url": "https://github.com/chakra-core/ChakraCore"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0990"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20210125210139/http://www.securityfocus.com/bid/103604"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20211207123630/http://www.securitytracker.com/id/1040650"
}
],
"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-VHC3-JH5X-7VHV
Vulnerability from github – Published: 2024-09-24 00:31 – Updated: 2024-09-25 21:30Inappropriate implementation in V8 in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)
{
"affected": [],
"aliases": [
"CVE-2024-7024"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-23T23:15:10Z",
"severity": "CRITICAL"
},
"details": "Inappropriate implementation in V8 in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)",
"id": "GHSA-vhc3-jh5x-7vhv",
"modified": "2024-09-25T21:30:34Z",
"published": "2024-09-24T00:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7024"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/334120897"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-VHGC-P69C-HP2H
Vulnerability from github – Published: 2026-03-30 12:32 – Updated: 2026-03-30 12:32NetSetMan 4.7.1 contains a buffer overflow vulnerability in the Workgroup feature that allows local attackers to crash the application by supplying oversized input. Attackers can create a malicious configuration file with excessive data and paste it into the Workgroup field to trigger a denial of service condition.
{
"affected": [],
"aliases": [
"CVE-2018-25228"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-30T12:16:16Z",
"severity": "MODERATE"
},
"details": "NetSetMan 4.7.1 contains a buffer overflow vulnerability in the Workgroup feature that allows local attackers to crash the application by supplying oversized input. Attackers can create a malicious configuration file with excessive data and paste it into the Workgroup field to trigger a denial of service condition.",
"id": "GHSA-vhgc-p69c-hp2h",
"modified": "2026-03-30T12:32:26Z",
"published": "2026-03-30T12:32:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-25228"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/46417"
},
{
"type": "WEB",
"url": "https://www.netsetman.com"
},
{
"type": "WEB",
"url": "https://www.netsetman.com/netsetman.exe"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/netsetman-workgroup-buffer-overflow-denial-of-service"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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-VHH8-4Q5C-7WG7
Vulnerability from github – Published: 2023-07-21 03:30 – Updated: 2024-04-04 06:18async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in tcpsocket.hpp when processing malformed TCP packets.
{
"affected": [],
"aliases": [
"CVE-2023-38632"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-21T02:15:09Z",
"severity": "CRITICAL"
},
"details": "async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in tcpsocket.hpp when processing malformed TCP packets.",
"id": "GHSA-vhh8-4q5c-7wg7",
"modified": "2024-04-04T06:18:18Z",
"published": "2023-07-21T03:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38632"
},
{
"type": "WEB",
"url": "https://github.com/eminfedar/async-sockets-cpp/issues/31"
}
],
"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-VHJQ-552G-M4H6
Vulnerability from github – Published: 2025-07-25 21:33 – Updated: 2025-07-25 21:33A global buffer overflow vulnerability was found in the soup_header_name_to_string function in Libsoup. The soup_header_name_to_string function does not validate the name parameter passed in, and directly accesses soup_header_name_strings[name]. The value of name is controllable, when name exceeds the index range of soup_headr_name_string, it will cause an out-of-bounds access.
{
"affected": [],
"aliases": [
"CVE-2025-8197"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-25T20:15:25Z",
"severity": "MODERATE"
},
"details": "A global buffer overflow vulnerability was found in the soup_header_name_to_string function in Libsoup. The `soup_header_name_to_string` function does not validate the `name` parameter passed in, and directly accesses `soup_header_name_strings[name]`. The value of `name` is controllable, when `name` exceeds the index range of `soup_headr_name_string`, it will cause an out-of-bounds access.",
"id": "GHSA-vhjq-552g-m4h6",
"modified": "2025-07-25T21:33:51Z",
"published": "2025-07-25T21:33:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8197"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-8197"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2383525"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-VHMP-9F3G-3F36
Vulnerability from github – Published: 2026-06-23 18:31 – Updated: 2026-06-25 18:30dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.
{
"affected": [],
"aliases": [
"CVE-2026-56115"
],
"database_specific": {
"cwe_ids": [
"CWE-787",
"CWE-862"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-23T17:17:09Z",
"severity": "MODERATE"
},
"details": "dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.",
"id": "GHSA-vhmp-9f3g-3f36",
"modified": "2026-06-25T18:30:34Z",
"published": "2026-06-23T18:31:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56115"
},
{
"type": "WEB",
"url": "https://github.com/garybowers/bootimus/issues/84"
},
{
"type": "WEB",
"url": "https://github.com/NetworkConfiguration/dhcpcd/commit/2f00c7bfc408b6582d331932dfa47829c4819029"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/bootimus-broken-access-control-via-jwtmiddleware-authorization-bypass"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/dhcpcd-stack-out-of-bounds-write-in-dhcp6-makemessage"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/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-VHMR-2R99-XHQW
Vulnerability from github – Published: 2022-05-24 19:14 – Updated: 2022-05-24 19:14A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later
{
"affected": [],
"aliases": [
"CVE-2021-34345"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-10T04:15:00Z",
"severity": "CRITICAL"
},
"details": "A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later",
"id": "GHSA-vhmr-2r99-xhqw",
"modified": "2022-05-24T19:14:13Z",
"published": "2022-05-24T19:14:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34345"
},
{
"type": "WEB",
"url": "https://www.qnap.com/en/security-advisory/qsa-21-36"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-VHP8-4RH9-77XP
Vulnerability from github – Published: 2022-05-24 19:17 – Updated: 2022-05-24 19:17Out of bounds memory access in ANGLE in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-30626"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-08T21:15:00Z",
"severity": "HIGH"
},
"details": "Out of bounds memory access in ANGLE in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-vhp8-4rh9-77xp",
"modified": "2022-05-24T19:17:01Z",
"published": "2022-05-24T19:17:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30626"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1241036"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation MIT-3
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.