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
16903 vulnerabilities reference this CWE, most recent first.
GHSA-MJW2-2R6J-Q7VC
Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2023-03-02 18:30ImageMagick 7.0.8-50 Q16 has a heap-based buffer overflow in MagickCore/fourier.c in ComplexImage.
{
"affected": [],
"aliases": [
"CVE-2019-13308"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-05T01:15:00Z",
"severity": "HIGH"
},
"details": "ImageMagick 7.0.8-50 Q16 has a heap-based buffer overflow in MagickCore/fourier.c in ComplexImage.",
"id": "GHSA-mjw2-2r6j-q7vc",
"modified": "2023-03-02T18:30:32Z",
"published": "2022-05-24T16:49:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13308"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/issues/1595"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/commit/61135001a625364e29bdce83832f043eebde7b5a"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick6/commit/19651f3db63fa1511ed83a348c4c82fa553f8d01"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00007.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4192-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4712"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00069.html"
}
],
"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-MJW2-5QC5-7H27
Vulnerability from github – Published: 2023-06-06 12:30 – Updated: 2024-04-04 04:35A heap buffer overflow vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nmq_subinfo_decode() in the file mqtt_parser.c. An attacker could exploit this vulnerability to cause a denial of service attack.
{
"affected": [],
"aliases": [
"CVE-2023-33659"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-06T12:15:09Z",
"severity": "HIGH"
},
"details": "A heap buffer overflow vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nmq_subinfo_decode() in the file mqtt_parser.c. An attacker could exploit this vulnerability to cause a denial of service attack.",
"id": "GHSA-mjw2-5qc5-7h27",
"modified": "2024-04-04T04:35:06Z",
"published": "2023-06-06T12:30:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33659"
},
{
"type": "WEB",
"url": "https://github.com/emqx/nanomq/issues/1154"
},
{
"type": "WEB",
"url": "https://github.com/nanomq/NanoNNG/pull/509/commits/6815c4036a2344865da393803ecdb7af27d8bde1"
},
{
"type": "WEB",
"url": "https://github.com/emqx/nanomq"
}
],
"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-MJWC-XFFH-MM3W
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31Dimension versions 4.1.2 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-30312"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T18:15:27Z",
"severity": "HIGH"
},
"details": "Dimension versions 4.1.2 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-mjwc-xffh-mm3w",
"modified": "2025-07-08T18:31:52Z",
"published": "2025-07-08T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30312"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/dimension/apsb25-63.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-MJWR-F33F-HP8Q
Vulnerability from github – Published: 2024-05-17 15:31 – Updated: 2025-12-23 21:30In the Linux kernel, the following vulnerability has been resolved:
crypto: s390/aes - Fix buffer overread in CTR mode
When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and copy it into a buffer first for processing.
{
"affected": [],
"aliases": [
"CVE-2023-52669"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-17T14:15:09Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: s390/aes - Fix buffer overread in CTR mode\n\nWhen processing the last block, the s390 ctr code will always read\na whole block, even if there isn\u0027t a whole block of data left. Fix\nthis by using the actual length left and copy it into a buffer first\nfor processing.",
"id": "GHSA-mjwr-f33f-hp8q",
"modified": "2025-12-23T21:30:18Z",
"published": "2024-05-17T15:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52669"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a7f580cdb42ec3d53bbb7c4e4335a98423703285"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cd51e26a3b89706beec64f2d8296cfb1c34e0c79"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d07f951903fa9922c375b8ab1ce81b18a0034e3b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d68ac38895e84446848b7647ab9458d54cacba3e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbc9a791a70ea47be9f2acf251700fe254a2ab23"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e78f1a43e72daf77705ad5b9946de66fc708b874"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.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-MJXR-6GQF-W78H
Vulnerability from github – Published: 2026-06-28 03:33 – Updated: 2026-09-01 15:30FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.
{
"affected": [],
"aliases": [
"CVE-2026-58049"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-28T02:16:30Z",
"severity": "HIGH"
},
"details": "FFmpeg\u0027s RASC video decoder (decode_dlta in libavcodec/rasc.c) performs 32-bit reads and writes at the row cursor before the NEXT_LINE row-boundary check and validates the DLTA region in pixel rather than byte units, so a DLTA run on a PAL8 frame can access several bytes past the row allocation. A crafted media stream using the RASC FourCC, decoded by libavcodec, triggers a bitstream-controlled out-of-bounds heap write and adjacent out-of-bounds read, leading to memory corruption.",
"id": "GHSA-mjxr-6gqf-w78h",
"modified": "2026-09-01T15:30:49Z",
"published": "2026-06-28T03:33:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58049"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:43711"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:51180"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:52832"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:52833"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:60520"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:61627"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:61628"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:61629"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-58049"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493952"
},
{
"type": "WEB",
"url": "https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/rasc.c"
},
{
"type": "WEB",
"url": "https://github.com/bikini/exploitarium/tree/main/ffmpeg-rasc-dlta-calc-poc"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58049.json"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-write-in-rasc-decoder-decode-dlta"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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-MJXV-WCXG-9MV9
Vulnerability from github – Published: 2024-03-11 21:31 – Updated: 2024-08-27 18:31In TBD of TBD, there is a possible Authentication Bypass due to improperly used crypto. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2024-22005"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-11T19:15:47Z",
"severity": "HIGH"
},
"details": "In TBD of TBD, there is a possible Authentication Bypass due to improperly used crypto. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-mjxv-wcxg-9mv9",
"modified": "2024-08-27T18:31:34Z",
"published": "2024-03-11T21:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22005"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2024-03-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MM2H-F35Q-8C2J
Vulnerability from github – Published: 2022-08-26 00:03 – Updated: 2022-08-27 00:00Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the function fromSetSysTime.
{
"affected": [],
"aliases": [
"CVE-2022-37813"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-25T15:15:00Z",
"severity": "CRITICAL"
},
"details": "Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the function fromSetSysTime.",
"id": "GHSA-mm2h-f35q-8c2j",
"modified": "2022-08-27T00:00:52Z",
"published": "2022-08-26T00:03:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-37813"
},
{
"type": "WEB",
"url": "https://github.com/Darry-lang1/vuln/tree/main/Tenda/AC1206/16"
}
],
"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-MM2J-J435-WG8G
Vulnerability from github – Published: 2023-10-25 18:32 – Updated: 2023-11-01 18:30TOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWlanRedirect.
{
"affected": [],
"aliases": [
"CVE-2023-46548"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-25T18:17:39Z",
"severity": "CRITICAL"
},
"details": "TOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWlanRedirect.",
"id": "GHSA-mm2j-j435-wg8g",
"modified": "2023-11-01T18:30:32Z",
"published": "2023-10-25T18:32:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-46548"
},
{
"type": "WEB",
"url": "https://github.com/XYIYM/Digging/blob/main/TOTOLINK/X2000R/1/1.md"
},
{
"type": "WEB",
"url": "https://totolink.cn/home/menu/detail.html?menu_listtpl=download\u0026id=85\u0026ids=36"
}
],
"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-MM2P-HR96-MVRV
Vulnerability from github – Published: 2022-08-29 00:00 – Updated: 2022-09-02 00:01Tenda M3 V1.0.0.12(4856) was discovered to contain a heap buffer overflow vulnerability in the function formSetFixTools. This vulnerability allows attackers to cause a Denial of Service (DoS) via the MACAddr parameter.
{
"affected": [],
"aliases": [
"CVE-2022-38563"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-28T17:15:00Z",
"severity": "HIGH"
},
"details": "Tenda M3 V1.0.0.12(4856) was discovered to contain a heap buffer overflow vulnerability in the function formSetFixTools. This vulnerability allows attackers to cause a Denial of Service (DoS) via the MACAddr parameter.",
"id": "GHSA-mm2p-hr96-mvrv",
"modified": "2022-09-02T00:01:10Z",
"published": "2022-08-29T00:00:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38563"
},
{
"type": "WEB",
"url": "https://github.com/xxy1126/Vuln/tree/main/Tenda%20M3/formSetFixTools_Mac"
}
],
"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-MM3M-JP7W-CJ3M
Vulnerability from github – Published: 2026-09-05 00:31 – Updated: 2026-09-05 00:31Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversized attribute names to overflow the destination buffer, causing memory corruption and crashes when applications enumerate attribute names.
{
"affected": [],
"aliases": [
"CVE-2026-86095"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-04T23:18:03Z",
"severity": "HIGH"
},
"details": "Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversized attribute names to overflow the destination buffer, causing memory corruption and crashes when applications enumerate attribute names.",
"id": "GHSA-mm3m-jp7w-cj3m",
"modified": "2026-09-05T00:31:06Z",
"published": "2026-09-05T00:31:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86095"
},
{
"type": "WEB",
"url": "https://github.com/Unidata/netcdf-c"
},
{
"type": "WEB",
"url": "https://github.com/Unidata/netcdf-c/blob/v4.10.1/libhdf5/hdf5attr.c"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/unidata-netcdf-c-through-4.10.1-out-of-bounds-write-via-oversized-hdf5-attribute-name"
}
],
"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"
}
]
}
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.