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.
15386 vulnerabilities reference this CWE, most recent first.
GHSA-C3P4-6X5W-74FX
Vulnerability from github – Published: 2022-02-05 00:00 – Updated: 2023-08-08 15:31
VLAI
Details
TOTOLINK X5000R v9.1.0u.6118_B20201102 was discovered to contain a stack overflow in the function setL2tpServerCfg. This vulnerability allows attackers to cause a Denial of Service (DoS) via the eip, sip, server parameters.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2021-45736"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-04T02:15:00Z",
"severity": "HIGH"
},
"details": "TOTOLINK X5000R v9.1.0u.6118_B20201102 was discovered to contain a stack overflow in the function setL2tpServerCfg. This vulnerability allows attackers to cause a Denial of Service (DoS) via the eip, sip, server parameters.",
"id": "GHSA-c3p4-6x5w-74fx",
"modified": "2023-08-08T15:31:37Z",
"published": "2022-02-05T00:00:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45736"
},
{
"type": "WEB",
"url": "https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_9/9.md"
}
],
"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-C3Q5-R222-8XMP
Vulnerability from github – Published: 2023-05-31 21:31 – Updated: 2024-04-04 04:27
VLAI
Details
H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the SetMobileAPInfoById interface at /goform/aspForm.
Severity
7.2 (High)
{
"affected": [],
"aliases": [
"CVE-2023-33639"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-31T21:15:09Z",
"severity": "HIGH"
},
"details": "H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the SetMobileAPInfoById interface at /goform/aspForm.",
"id": "GHSA-c3q5-r222-8xmp",
"modified": "2024-04-04T04:27:03Z",
"published": "2023-05-31T21:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33639"
},
{
"type": "WEB",
"url": "https://hackmd.io/%400dayResearch/Bk2hvYkH3"
},
{
"type": "WEB",
"url": "https://hackmd.io/@0dayResearch/Bk2hvYkH3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C3W6-2R47-82X8
Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2024-04-04 02:04
VLAI
Details
In wifilogd, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-113655028
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2019-9258"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-09-27T19:15:00Z",
"severity": "HIGH"
},
"details": "In wifilogd, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-113655028",
"id": "GHSA-c3w6-2r47-82x8",
"modified": "2024-04-04T02:04:51Z",
"published": "2022-05-24T16:57:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9258"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/android-10"
}
],
"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-C3X5-FM9M-C4FC
Vulnerability from github – Published: 2026-05-12 21:31 – Updated: 2026-05-14 15:31
VLAI
Details
An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to execute arbitrary code when a specially crafted VC6 file is being parsed.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-65086"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-12T21:16:13Z",
"severity": "HIGH"
},
"details": "An Out-of-Bounds Write vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to execute arbitrary code when a specially crafted VC6 file is being parsed.",
"id": "GHSA-c3x5-fm9m-c4fc",
"modified": "2026-05-14T15:31:53Z",
"published": "2026-05-12T21:31:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-65086"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-01"
}
],
"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:A/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-C3X6-PX6W-WRXQ
Vulnerability from github – Published: 2022-05-21 00:01 – Updated: 2022-06-02 00:00
VLAI
Details
A vulnerability has been identified in Simcenter Femap (All versions < V2022.2). The affected application contains an out of bounds write past the end of an allocated structure while parsing specially crafted .NEU files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-15594)
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-27653"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-20T13:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in Simcenter Femap (All versions \u003c V2022.2). The affected application contains an out of bounds write past the end of an allocated structure while parsing specially crafted .NEU files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-15594)",
"id": "GHSA-c3x6-px6w-wrxq",
"modified": "2022-06-02T00:00:23Z",
"published": "2022-05-21T00:01:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27653"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-162616.pdf"
}
],
"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-C3XQ-266Q-8GCX
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2026-06-05 21:31
VLAI
Details
Linaro/OP-TEE OP-TEE Prior to version v3.4.0 is affected by: Boundary checks. The impact is: This could lead to corruption of any memory which the TA can access. The component is: optee_os. The fixed version is: v3.4.0.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2019-1010292"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-16T14:15:00Z",
"severity": "CRITICAL"
},
"details": "Linaro/OP-TEE OP-TEE Prior to version v3.4.0 is affected by: Boundary checks. The impact is: This could lead to corruption of any memory which the TA can access. The component is: optee_os. The fixed version is: v3.4.0.",
"id": "GHSA-c3xq-266q-8gcx",
"modified": "2026-06-05T21:31:48Z",
"published": "2022-05-24T16:50:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1010292"
},
{
"type": "WEB",
"url": "https://github.com/OP-TEE/optee_os/commit/e3adcf566cb278444830e7badfdcc3983e334fd1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C425-5GHG-6J48
Vulnerability from github – Published: 2024-05-22 09:31 – Updated: 2025-09-24 21:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
net/tls: Fix flipped sign in tls_err_abort() calls
sk->sk_err appears to expect a positive value, a convention that ktls doesn't always follow and that leads to memory corruption in other code. For instance,
[kworker]
tls_encrypt_done(..., err=<negative error from crypto request>)
tls_err_abort(.., err)
sk->sk_err = err;
[task]
splice_from_pipe_feed
...
tls_sw_do_sendpage
if (sk->sk_err) {
ret = -sk->sk_err; // ret is positive
splice_from_pipe_feed (continued)
ret = actor(...) // ret is still positive and interpreted as bytes
// written, resulting in underflow of buf->len and
// sd->len, leading to huge buf->offset and bogus
// addresses computed in later calls to actor()
Fix all tls_err_abort() callers to pass a negative error code consistently and centralize the error-prone sign flip there, throwing in a warning to catch future misuse and uninlining the function so it really does only warn once.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-47496"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-22T09:15:11Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: Fix flipped sign in tls_err_abort() calls\n\nsk-\u003esk_err appears to expect a positive value, a convention that ktls\ndoesn\u0027t always follow and that leads to memory corruption in other code.\nFor instance,\n\n [kworker]\n tls_encrypt_done(..., err=\u003cnegative error from crypto request\u003e)\n tls_err_abort(.., err)\n sk-\u003esk_err = err;\n\n [task]\n splice_from_pipe_feed\n ...\n tls_sw_do_sendpage\n if (sk-\u003esk_err) {\n ret = -sk-\u003esk_err; // ret is positive\n\n splice_from_pipe_feed (continued)\n ret = actor(...) // ret is still positive and interpreted as bytes\n // written, resulting in underflow of buf-\u003elen and\n // sd-\u003elen, leading to huge buf-\u003eoffset and bogus\n // addresses computed in later calls to actor()\n\nFix all tls_err_abort() callers to pass a negative error code\nconsistently and centralize the error-prone sign flip there, throwing in\na warning to catch future misuse and uninlining the function so it\nreally does only warn once.",
"id": "GHSA-c425-5ghg-6j48",
"modified": "2025-09-24T21:30:30Z",
"published": "2024-05-22T09:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47496"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/da353fac65fede6b8b4cfe207f0d9408e3121105"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0cfd5159f314d6b304d030363650b06a2299cbb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e41473543f75f7dbc5d605007e6f883f1bd13b9a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f3dec7e7ace38224f82cf83f0049159d067c2e19"
}
],
"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-C42X-XW5M-9J9P
Vulnerability from github – Published: 2025-05-20 18:30 – Updated: 2025-11-03 21:33
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: prevent out-of-bounds stream writes by validating *pos
ksmbd_vfs_stream_write() did not validate whether the write offset (pos) was within the bounds of the existing stream data length (v_len). If pos was greater than or equal to v_len, this could lead to an out-of-bounds memory write.
This patch adds a check to ensure *pos is less than v_len before proceeding. If the condition fails, -EINVAL is returned.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-37947"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-20T16:15:32Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: prevent out-of-bounds stream writes by validating *pos\n\nksmbd_vfs_stream_write() did not validate whether the write offset\n(*pos) was within the bounds of the existing stream data length (v_len).\nIf *pos was greater than or equal to v_len, this could lead to an\nout-of-bounds memory write.\n\nThis patch adds a check to ensure *pos is less than v_len before\nproceeding. If the condition fails, -EINVAL is returned.",
"id": "GHSA-c42x-xw5m-9j9p",
"modified": "2025-11-03T21:33:55Z",
"published": "2025-05-20T18:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37947"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034"
},
{
"type": "WEB",
"url": "https://github.com/doyensec/KSMBD-CVE-2025-37947/blob/main/CVE-2025-37947.c"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.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-C46F-P363-F93X
Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2024-04-04 00:27
VLAI
Details
In PHP imagick extension in versions between 3.3.0 and 3.4.4, writing to an array of values in ImagickKernel::fromMatrix() function did not check that the address will be within the allocated array. This could lead to out of bounds write to memory if the function is called with the data controlled by untrusted party.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2019-11037"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-05-03T20:29:00Z",
"severity": "CRITICAL"
},
"details": "In PHP imagick extension in versions between 3.3.0 and 3.4.4, writing to an array of values in ImagickKernel::fromMatrix() function did not check that the address will be within the allocated array. This could lead to out of bounds write to memory if the function is called with the data controlled by untrusted party.",
"id": "GHSA-c46f-p363-f93x",
"modified": "2024-04-04T00:27:07Z",
"published": "2022-05-24T16:45:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11037"
},
{
"type": "WEB",
"url": "https://github.com/CVEProject/cvelist/pull/1964"
},
{
"type": "WEB",
"url": "https://bugs.php.net/bug.php?id=77791"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MQ7WJA25YF2R2LRALK4QEYWUHHJPSUD"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BU66V7QJKD32RXLY5J7Z5NZH4V3VV524"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FME5ZG7DDYWUPPHTTAFJB5OFFCPXYHPS"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7MQ7WJA25YF2R2LRALK4QEYWUHHJPSUD"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BU66V7QJKD32RXLY5J7Z5NZH4V3VV524"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FME5ZG7DDYWUPPHTTAFJB5OFFCPXYHPS"
},
{
"type": "WEB",
"url": "https://seclists.org/bugtraq/2019/Nov/39"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202003-38"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4586-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2019/dsa-4576"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00016.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/108292"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C46J-8P94-C85X
Vulnerability from github – Published: 2025-12-12 21:31 – Updated: 2026-03-20 18:31
VLAI
Details
A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-43520"
],
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-12T21:15:56Z",
"severity": "MODERATE"
},
"details": "A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.",
"id": "GHSA-c46j-8p94-c85x",
"modified": "2026-03-20T18:31:15Z",
"published": "2025-12-12T21:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43520"
},
{
"type": "WEB",
"url": "https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125632"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125633"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125634"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125635"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125636"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125637"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125638"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125639"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520"
}
],
"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"
}
]
}
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.