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.
15198 vulnerabilities reference this CWE, most recent first.
GHSA-GXHV-3HWF-WJP9
Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2023-02-08 00:27
VLAI
Summary
JSON-Patch Out-of-bounds Write vulnerability
Details
An out of bound write can occur when patching an Openshift object using the oc patch functionality in OpenShift Container Platform before 3.7. An attacker can use this flaw to cause a denial of service attack on the Openshift master api service which provides cluster management.
Severity
7.7 (High)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/evanphx/json-patch"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/evanphx/json-patch"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.1-0.20180525145409-4c9aadca8f89"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-14632"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-02-08T00:27:34Z",
"nvd_published_at": "2018-09-06T14:29:00Z",
"severity": "HIGH"
},
"details": "An out of bound write can occur when patching an Openshift object using the `oc patch` functionality in OpenShift Container Platform before 3.7. An attacker can use this flaw to cause a denial of service attack on the Openshift master api service which provides cluster management.",
"id": "GHSA-gxhv-3hwf-wjp9",
"modified": "2023-02-08T00:27:34Z",
"published": "2022-05-13T01:34:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14632"
},
{
"type": "WEB",
"url": "https://github.com/evanphx/json-patch/pull/57"
},
{
"type": "WEB",
"url": "https://github.com/evanphx/json-patch/commit/4c9aadca8f89e349c999f04e28199e96e81aba03"
},
{
"type": "WEB",
"url": "https://github.com/evanphx/json-patch/commit/4c9aadca8f89e349c999f04e28199e96e81aba03#diff-65c563bba473be9d94ce4d033f74810e"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHBA-2018:2652"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:2654"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:2709"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:2906"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:2908"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14632"
},
{
"type": "PACKAGE",
"url": "https://github.com/evanphx/json-patch"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2021-0076"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "JSON-Patch Out-of-bounds Write vulnerability"
}
GHSA-GXJ8-MFJR-VWJ7
Vulnerability from github – Published: 2022-05-12 00:00 – Updated: 2022-05-12 00:00
VLAI
Details
Acrobat Reader DC versions 22.001.20085 (and earlier), 20.005.3031x (and earlier) and 17.012.30205 (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.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-27798"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-11T18:15:00Z",
"severity": "HIGH"
},
"details": "Acrobat Reader DC versions 22.001.20085 (and earlier), 20.005.3031x (and earlier) and 17.012.30205 (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-gxj8-mfjr-vwj7",
"modified": "2022-05-12T00:00:42Z",
"published": "2022-05-12T00:00:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27798"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb22-16.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-GXMR-RXPV-C8FQ
Vulnerability from github – Published: 2024-02-01 21:30 – Updated: 2025-11-04 18:30
VLAI
Details
Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability.
Severity
9.1 (Critical)
{
"affected": [],
"aliases": [
"CVE-2023-5841"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-01T19:15:08Z",
"severity": "CRITICAL"
},
"details": "Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX\u00a0image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability.",
"id": "GHSA-gxmr-rxpv-c8fq",
"modified": "2025-11-04T18:30:45Z",
"published": "2024-02-01T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5841"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSB6DB5LAKGPLRXEF5HDNGUMT7GIFT2C"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWMINVKQLSUHECXBSQMZFCSDRIHFOJJI"
},
{
"type": "WEB",
"url": "https://takeonme.org/cves/CVE-2023-5841.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/32"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/34"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Sep/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:N",
"type": "CVSS_V3"
}
]
}
GHSA-GXMW-M3HR-PPXR
Vulnerability from github – Published: 2022-03-19 00:00 – Updated: 2022-03-27 00:00
VLAI
Details
Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the S1 parameter in the SetSysTimeCfg function.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2022-25459"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-18T21:15:00Z",
"severity": "CRITICAL"
},
"details": "Tenda AC6 v15.03.05.09_multi was discovered to contain a stack overflow via the S1 parameter in the SetSysTimeCfg function.",
"id": "GHSA-gxmw-m3hr-ppxr",
"modified": "2022-03-27T00:00:44Z",
"published": "2022-03-19T00:00:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-25459"
},
{
"type": "WEB",
"url": "https://github.com/EPhaha/IOT_vuln/tree/main/Tenda/AC6/15"
}
],
"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-GXPX-HFGX-M75G
Vulnerability from github – Published: 2023-05-18 00:30 – Updated: 2024-04-04 04:13
VLAI
Details
A potential heap based buffer overflow was found in _bfd_elf_slurp_version_tables() in bfd/elf.c. This may lead to loss of availability.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-1972"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-17T22:15:10Z",
"severity": "MODERATE"
},
"details": "A potential heap based buffer overflow was found in _bfd_elf_slurp_version_tables() in bfd/elf.c. This may lead to loss of availability.",
"id": "GHSA-gxpx-hfgx-m75g",
"modified": "2024-04-04T04:13:57Z",
"published": "2023-05-18T00:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1972"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2185646"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-15"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=30285"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GXQW-X97W-H62R
Vulnerability from github – Published: 2022-05-24 17:38 – Updated: 2022-05-24 17:38
VLAI
Details
In ReadLogicalParts of basicmbr.cc, 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: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.
{
"affected": [],
"aliases": [
"CVE-2021-0308"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-11T22:15:00Z",
"severity": "HIGH"
},
"details": "In ReadLogicalParts of basicmbr.cc, 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: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.",
"id": "GHSA-gxqw-x97w-h62r",
"modified": "2022-05-24T17:38:41Z",
"published": "2022-05-24T17:38:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0308"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00010.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202105-03"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2021-01-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GXR9-XC6P-VJJW
Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2026-05-12 15:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
PCI: endpoint: Fix configfs group list head handling
Doing a list_del() on the epf_group field of struct pci_epf_driver in pci_epf_remove_cfs() is not correct as this field is a list head, not a list entry. This list_del() call triggers a KASAN warning when an endpoint function driver which has a configfs attribute group is torn down:
================================================================== BUG: KASAN: slab-use-after-free in pci_epf_remove_cfs+0x17c/0x198 Write of size 8 at addr ffff00010f4a0d80 by task rmmod/319
CPU: 3 UID: 0 PID: 319 Comm: rmmod Not tainted 6.16.0-rc2 #1 NONE Hardware name: Radxa ROCK 5B (DT) Call trace: show_stack+0x2c/0x84 (C) dump_stack_lvl+0x70/0x98 print_report+0x17c/0x538 kasan_report+0xb8/0x190 __asan_report_store8_noabort+0x20/0x2c pci_epf_remove_cfs+0x17c/0x198 pci_epf_unregister_driver+0x18/0x30 nvmet_pci_epf_cleanup_module+0x24/0x30 [nvmet_pci_epf] __arm64_sys_delete_module+0x264/0x424 invoke_syscall+0x70/0x260 el0_svc_common.constprop.0+0xac/0x230 do_el0_svc+0x40/0x58 el0_svc+0x48/0xdc el0t_64_sync_handler+0x10c/0x138 el0t_64_sync+0x198/0x19c ...
Remove this incorrect list_del() call from pci_epf_remove_cfs().
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-39783"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-11T17:15:44Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Fix configfs group list head handling\n\nDoing a list_del() on the epf_group field of struct pci_epf_driver in\npci_epf_remove_cfs() is not correct as this field is a list head, not\na list entry. This list_del() call triggers a KASAN warning when an\nendpoint function driver which has a configfs attribute group is torn\ndown:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in pci_epf_remove_cfs+0x17c/0x198\nWrite of size 8 at addr ffff00010f4a0d80 by task rmmod/319\n\nCPU: 3 UID: 0 PID: 319 Comm: rmmod Not tainted 6.16.0-rc2 #1 NONE\nHardware name: Radxa ROCK 5B (DT)\nCall trace:\nshow_stack+0x2c/0x84 (C)\ndump_stack_lvl+0x70/0x98\nprint_report+0x17c/0x538\nkasan_report+0xb8/0x190\n__asan_report_store8_noabort+0x20/0x2c\npci_epf_remove_cfs+0x17c/0x198\npci_epf_unregister_driver+0x18/0x30\nnvmet_pci_epf_cleanup_module+0x24/0x30 [nvmet_pci_epf]\n__arm64_sys_delete_module+0x264/0x424\ninvoke_syscall+0x70/0x260\nel0_svc_common.constprop.0+0xac/0x230\ndo_el0_svc+0x40/0x58\nel0_svc+0x48/0xdc\nel0t_64_sync_handler+0x10c/0x138\nel0t_64_sync+0x198/0x19c\n...\n\nRemove this incorrect list_del() call from pci_epf_remove_cfs().",
"id": "GHSA-gxr9-xc6p-vjjw",
"modified": "2026-05-12T15:31:08Z",
"published": "2025-09-11T18:35:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39783"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0758862386f114d9ab1e23181461bd1e2e9ec4c6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/409af8b9f7b4f23cd0464e71c6cd6fe13c076ae2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6cf65505523224cab1449d726d2ce8180c2941ee"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/80ea6e6904fb2ba4ccb5d909579988466ec65358"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a302bd89db35d8b7e279de4d2b41c16c7f191069"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d5aecddc3452371d9da82cdbb0c715812524b54b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d79123d79a8154b4318529b7b2ff7e15806f480b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc4ffbd571716ff3b171418fb03abe80e720a7b1"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.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-GXV4-CQJV-GG3M
Vulnerability from github – Published: 2022-05-24 17:18 – Updated: 2022-05-24 17:18
VLAI
Details
Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.
{
"affected": [],
"aliases": [
"CVE-2020-12038"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-05-19T22:15:00Z",
"severity": "MODERATE"
},
"details": "Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.",
"id": "GHSA-gxv4-cqjv-gg3m",
"modified": "2022-05-24T17:18:11Z",
"published": "2022-05-24T17:18:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12038"
},
{
"type": "WEB",
"url": "https://www.us-cert.gov/ics/advisories/icsa-20-140-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GXW5-2W8J-82XF
Vulnerability from github – Published: 2022-07-03 00:00 – Updated: 2022-07-14 00:00
VLAI
Details
** DISPUTED ** md2roff 1.7 has a stack-based buffer overflow via a Markdown file containing a large number of consecutive characters to be processed. NOTE: the vendor's position is that the product is not intended for untrusted input.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2022-34913"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-07-02T20:15:00Z",
"severity": "CRITICAL"
},
"details": "** DISPUTED ** md2roff 1.7 has a stack-based buffer overflow via a Markdown file containing a large number of consecutive characters to be processed. NOTE: the vendor\u0027s position is that the product is not intended for untrusted input.",
"id": "GHSA-gxw5-2w8j-82xf",
"modified": "2022-07-14T00:00:19Z",
"published": "2022-07-03T00:00:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34913"
},
{
"type": "WEB",
"url": "https://github.com/nereusx/md2roff/issues/4"
}
],
"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-GXWH-3W8F-R6P5
Vulnerability from github – Published: 2022-04-06 00:01 – Updated: 2022-04-09 00:00
VLAI
Details
Heap buffer overflow in ANGLE in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-0789"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-05T01:15:00Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in ANGLE in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-gxwh-3w8f-r6p5",
"modified": "2022-04-09T00:00:30Z",
"published": "2022-04-06T00:01:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0789"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2022/03/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1289383"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-25"
}
],
"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"
}
]
}
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.