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.
15138 vulnerabilities reference this CWE, most recent first.
GHSA-R9X6-P32F-JFM3
Vulnerability from github – Published: 2025-06-23 18:30 – Updated: 2025-06-23 18:30
VLAI
Details
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-6516"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-23T17:15:32Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-r9x6-p32f-jfm3",
"modified": "2025-06-23T18:30:26Z",
"published": "2025-06-23T18:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6516"
},
{
"type": "WEB",
"url": "https://github.com/HDFGroup/hdf5/issues/5581"
},
{
"type": "WEB",
"url": "https://github.com/user-attachments/files/20626851/reproduce.tar.gz"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.313636"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.313636"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.592589"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-R9XR-RJGC-3Q5H
Vulnerability from github – Published: 2022-05-02 03:55 – Updated: 2022-05-02 03:55
VLAI
Details
Multiple stack-based buffer overflows in the CertDecoder::GetName function in src/asn.cpp in TaoCrypt in yaSSL before 1.9.9, as used in mysqld in MySQL 5.0.x before 5.0.90, MySQL 5.1.x before 5.1.43, MySQL 5.5.x through 5.5.0-m2, and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and daemon crash) by establishing an SSL connection and sending an X.509 client certificate with a crafted name field, as demonstrated by mysql_overflow1.py and the vd_mysql5 module in VulnDisco Pack Professional 8.11. NOTE: this was originally reported for MySQL 5.0.51a.
{
"affected": [],
"aliases": [
"CVE-2009-4484"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2009-12-30T21:30:00Z",
"severity": "HIGH"
},
"details": "Multiple stack-based buffer overflows in the CertDecoder::GetName function in src/asn.cpp in TaoCrypt in yaSSL before 1.9.9, as used in mysqld in MySQL 5.0.x before 5.0.90, MySQL 5.1.x before 5.1.43, MySQL 5.5.x through 5.5.0-m2, and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption and daemon crash) by establishing an SSL connection and sending an X.509 client certificate with a crafted name field, as demonstrated by mysql_overflow1.py and the vd_mysql5 module in VulnDisco Pack Professional 8.11. NOTE: this was originally reported for MySQL 5.0.51a.",
"id": "GHSA-r9xr-rjgc-3q5h",
"modified": "2022-05-02T03:55:14Z",
"published": "2022-05-02T03:55:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-4484"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=555313"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55416"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/dailydave/2010-q1/0002.html"
},
{
"type": "WEB",
"url": "http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.0/revision/2837.1.1"
},
{
"type": "WEB",
"url": "http://bugs.mysql.com/bug.php?id=50227"
},
{
"type": "WEB",
"url": "http://dev.mysql.com/doc/refman/5.0/en/news-5-0-90.html"
},
{
"type": "WEB",
"url": "http://dev.mysql.com/doc/refman/5.1/en/news-5-1-43.html"
},
{
"type": "WEB",
"url": "http://intevydis.blogspot.com/2010/01/mysq-yassl-stack-overflow.html"
},
{
"type": "WEB",
"url": "http://intevydis.com/mysql_demo.html"
},
{
"type": "WEB",
"url": "http://intevydis.com/mysql_overflow1.py.txt"
},
{
"type": "WEB",
"url": "http://intevydis.com/vd-list.shtml"
},
{
"type": "WEB",
"url": "http://isc.sans.org/diary.html?storyid=7900"
},
{
"type": "WEB",
"url": "http://lists.immunitysec.com/pipermail/dailydave/2010-January/006020.html"
},
{
"type": "WEB",
"url": "http://lists.mysql.com/commits/96697"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/37493"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/38344"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/38364"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/38517"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/38573"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1023402"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1023513"
},
{
"type": "WEB",
"url": "http://ubuntu.com/usn/usn-897-1"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2010/dsa-1997"
},
{
"type": "WEB",
"url": "http://www.intevydis.com/blog/?p=106"
},
{
"type": "WEB",
"url": "http://www.intevydis.com/blog/?p=57"
},
{
"type": "WEB",
"url": "http://www.metasploit.com/modules/exploit/linux/mysql/mysql_yassl_getname"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/61956"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/37640"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/37943"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/37974"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1397-1"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2010/0233"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2010/0236"
},
{
"type": "WEB",
"url": "http://www.yassl.com/news.html#yassl199"
},
{
"type": "WEB",
"url": "http://www.yassl.com/release.html"
},
{
"type": "WEB",
"url": "http://yassl.cvs.sourceforge.net/viewvc/yassl/yassl/taocrypt/src/asn.cpp?r1=1.13\u0026r2=1.14"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-RC22-R34X-H52W
Vulnerability from github – Published: 2026-01-06 03:31 – Updated: 2026-01-06 15:30
VLAI
Details
In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10182882; Issue ID: MSV-4684.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-20783"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-06T02:15:42Z",
"severity": "MODERATE"
},
"details": "In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10182882; Issue ID: MSV-4684.",
"id": "GHSA-rc22-r34x-h52w",
"modified": "2026-01-06T15:30:27Z",
"published": "2026-01-06T03:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20783"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/January-2026"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RC24-7XCW-V2VJ
Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30
VLAI
Details
Kofax Power PDF JP2 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of JP2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20393.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-37337"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T02:15:44Z",
"severity": "HIGH"
},
"details": "Kofax Power PDF JP2 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kofax Power PDF. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of JP2 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20393.",
"id": "GHSA-rc24-7xcw-v2vj",
"modified": "2024-05-03T03:30:54Z",
"published": "2024-05-03T03:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37337"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-932"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RC2H-948P-G7MF
Vulnerability from github – Published: 2022-05-13 01:32 – Updated: 2022-05-13 01:32
VLAI
Details
In WinRAR versions prior to and including 5.60, There is an out-of-bounds write vulnerability during parsing of a crafted LHA / LZH archive formats. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2018-20253"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-02-13T01:29:00Z",
"severity": "HIGH"
},
"details": "In WinRAR versions prior to and including 5.60, There is an out-of-bounds write vulnerability during parsing of a crafted LHA / LZH archive formats. Successful exploitation could lead to arbitrary code execution in the context of the current user.",
"id": "GHSA-rc2h-948p-g7mf",
"modified": "2022-05-13T01:32:23Z",
"published": "2022-05-13T01:32:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20253"
},
{
"type": "WEB",
"url": "https://research.checkpoint.com/extracting-code-execution-from-winrar"
},
{
"type": "WEB",
"url": "https://www.win-rar.com/whatsnew.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RC3H-X674-FMWQ
Vulnerability from github – Published: 2024-04-10 15:30 – Updated: 2024-04-10 15:30
VLAI
Details
Dell BIOS contains an Out-of-Bounds Write vulnerability. A local authenticated malicious user with admin privileges could potentially exploit this vulnerability, leading to denial of service.
Severity
4.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-22448"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-10T08:15:06Z",
"severity": "MODERATE"
},
"details": "Dell BIOS contains an Out-of-Bounds Write vulnerability. A local authenticated malicious user with admin privileges could potentially exploit this vulnerability, leading to denial of service.",
"id": "GHSA-rc3h-x674-fmwq",
"modified": "2024-04-10T15:30:39Z",
"published": "2024-04-10T15:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22448"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000221744/dsa-2024-066"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RC3J-9C9W-J5QC
Vulnerability from github – Published: 2025-05-18 15:30 – Updated: 2025-05-18 15:30
VLAI
Details
A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been declared as critical. This vulnerability affects the function ctxz_asp of the file /ctxz.asp of the component Connection Limit Page. The manipulation of the argument def/defTcp/defUdp/defIcmp/defOther leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-4883"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-18T15:15:18Z",
"severity": "HIGH"
},
"details": "A vulnerability was found in D-Link DI-8100 16.07.26A1. It has been declared as critical. This vulnerability affects the function ctxz_asp of the file /ctxz.asp of the component Connection Limit Page. The manipulation of the argument def/defTcp/defUdp/defIcmp/defOther leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-rc3j-9c9w-j5qc",
"modified": "2025-05-18T15:30:20Z",
"published": "2025-05-18T15:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4883"
},
{
"type": "WEB",
"url": "https://github.com/Yhuanhuan01/DI-8100_Vulnerability_Report/blob/main/DI-8100-Vulnerability_Report_ctxz.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.309436"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.309436"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.576392"
},
{
"type": "WEB",
"url": "https://www.dlink.com"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/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-RC44-5CMH-879M
Vulnerability from github – Published: 2023-05-25 15:30 – Updated: 2023-05-25 17:02
VLAI
Summary
Unrestricted recursion in htmlunit
Details
Those using HtmlUnit to browse untrusted webpages may be vulnerable to Denial of service attacks (DoS). If HtmlUnit is running on user supplied web pages, an attacker may supply content that causes HtmlUnit to crash by a stack overflow. This effect may support a denial of service attack. This issue affects HtmlUnit before 2.70.0.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.htmlunit:htmlunit"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.70.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-2798"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2023-05-25T17:02:56Z",
"nvd_published_at": "2023-05-25T14:15:10Z",
"severity": "HIGH"
},
"details": "Those using HtmlUnit to browse untrusted webpages may be vulnerable to Denial of service attacks (DoS). If HtmlUnit is running on user supplied web pages, an attacker may supply content that causes HtmlUnit to crash by a stack overflow. This effect may support a denial of service attack. This issue affects HtmlUnit before 2.70.0.\n\n",
"id": "GHSA-rc44-5cmh-879m",
"modified": "2023-05-25T17:02:56Z",
"published": "2023-05-25T15:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2798"
},
{
"type": "WEB",
"url": "https://github.com/HtmlUnit/htmlunit/commit/940dc7fd"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54613"
},
{
"type": "PACKAGE",
"url": "https://github.com/HtmlUnit/htmlunit"
},
{
"type": "WEB",
"url": "https://github.com/HtmlUnit/htmlunit/releases/tag/2.70.0"
}
],
"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"
}
],
"summary": "Unrestricted recursion in htmlunit"
}
GHSA-RC47-M48R-2657
Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-28 09:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc
The cpu_id attribute supplied by user space through UVERBS_ATTR_ALLOC_DMAH_CPU_ID is passed directly to cpumask_test_cpu() without first verifying that the value is within the valid CPU range.
Passing such untrusted data to cpumask_test_cpu() may lead to an out-of-bounds read of the underlying cpumask bitmap: the helper expands to a test_bit() that indexes the bitmap by cpu_id / BITS_PER_LONG with no bound check.
In addition, on kernels built with CONFIG_DEBUG_PER_CPU_MAPS it trips the WARN_ON_ONCE() in cpumask_check(); combined with panic_on_warn this turns a bad user input into a machine reboot.
Reject any cpu_id that is not smaller than nr_cpu_ids with -EINVAL before it is used.
Reported by Smatch.
Severity
7.1 (High)
{
"affected": [],
"aliases": [
"CVE-2026-53187"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-25T09:16:36Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc\n\nThe cpu_id attribute supplied by user space through\nUVERBS_ATTR_ALLOC_DMAH_CPU_ID is passed directly to cpumask_test_cpu()\nwithout first verifying that the value is within the valid CPU range.\n\nPassing such untrusted data to cpumask_test_cpu() may lead to an\nout-of-bounds read of the underlying cpumask bitmap: the helper expands\nto a test_bit() that indexes the bitmap by cpu_id / BITS_PER_LONG with\nno bound check.\n\nIn addition, on kernels built with CONFIG_DEBUG_PER_CPU_MAPS it trips\nthe WARN_ON_ONCE() in cpumask_check(); combined with panic_on_warn this\nturns a bad user input into a machine reboot.\n\nReject any cpu_id that is not smaller than nr_cpu_ids with -EINVAL\nbefore it is used.\n\nReported by Smatch.",
"id": "GHSA-rc47-m48r-2657",
"modified": "2026-06-28T09:31:43Z",
"published": "2026-06-25T09:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53187"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0efbb6b54ff56300867027d8e0800d0e32226a20"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/323c98a4ff06aa28114f2bf658fb43eb3b536bbc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd5e818be7964c1689fba2dad9e6bd3a827fee74"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RC4Q-M5WR-FHQH
Vulnerability from github – Published: 2022-05-24 19:07 – Updated: 2022-05-24 19:07
VLAI
Details
An out-of-bounds write vulnerability exists in the TIF bits_per_sample processing functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-21794"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-08T12:15:00Z",
"severity": "HIGH"
},
"details": "An out-of-bounds write vulnerability exists in the TIF bits_per_sample processing functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.",
"id": "GHSA-rc4q-m5wr-fhqh",
"modified": "2022-05-24T19:07:17Z",
"published": "2022-05-24T19:07:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21794"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1261"
}
],
"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"
}
]
}
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.