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.
15380 vulnerabilities reference this CWE, most recent first.
GHSA-65X8-3J2P-M8X9
Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2022-08-16 00:00
VLAI
Details
hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-15863"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-07-28T16:15:00Z",
"severity": "HIGH"
},
"details": "hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.",
"id": "GHSA-65x8-3j2p-m8x9",
"modified": "2022-08-16T00:00:44Z",
"published": "2022-05-24T17:24:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15863"
},
{
"type": "WEB",
"url": "https://git.qemu.org/?p=qemu.git;a=commitdiff;h=5519724a13664b43e225ca05351c60b4468e4555"
},
{
"type": "WEB",
"url": "https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.html"
},
{
"type": "WEB",
"url": "https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-27"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4467-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4760"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2020/07/22/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-65XC-7R86-GXJ9
Vulnerability from github – Published: 2022-06-20 00:00 – Updated: 2022-06-28 00:00
VLAI
Details
Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-2125"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-19T12:15:00Z",
"severity": "HIGH"
},
"details": "Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.",
"id": "GHSA-65xc-7r86-gxj9",
"modified": "2022-06-28T00:00:43Z",
"published": "2022-06-20T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2125"
},
{
"type": "WEB",
"url": "https://github.com/vim/vim/commit/0e8e938d497260dd57be67b4966cb27a5f72376f"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/17dab24d-beec-464d-9a72-5b6b11283705"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GFD2A4YLBR7OIRHTL7CK6YNMEIQ264CN"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U743FMJGFQ35GBPCQ6OWMVZEJPDFVEWM"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-32"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202305-16"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213443"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213444"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213488"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/28"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/41"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/43"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/Oct/45"
}
],
"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-65XM-PFX9-G5P3
Vulnerability from github – Published: 2026-04-10 00:30 – Updated: 2026-04-27 18:32
VLAI
Details
In TLSX_EchChangeSNI, the ctx->extensions branch set extensions unconditionally even when TLSX_Find returned NULL. This caused TLSX_UseSNI to attach the attacker-controlled publicName to the shared WOLFSSL_CTX when no inner SNI was configured. TLSX_EchRestoreSNI then failed to clean it up because its removal was gated on serverNameX != NULL. The inner ClientHello was sized before the pollution but written after it, causing TLSX_SNI_Write to memcpy 255 bytes past the allocation boundary.
Severity
9.1 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-5503"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-09T23:17:01Z",
"severity": "MODERATE"
},
"details": "In TLSX_EchChangeSNI, the ctx-\u003eextensions branch set extensions unconditionally even when TLSX_Find returned NULL. This caused TLSX_UseSNI to attach the attacker-controlled publicName to the shared WOLFSSL_CTX when no inner SNI was configured. TLSX_EchRestoreSNI then failed to clean it up because its removal was gated on serverNameX != NULL. The inner ClientHello was sized before the pollution but written after it, causing TLSX_SNI_Write to memcpy 255 bytes past the allocation boundary.",
"id": "GHSA-65xm-pfx9-g5p3",
"modified": "2026-04-27T18:32:01Z",
"published": "2026-04-10T00:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5503"
},
{
"type": "WEB",
"url": "https://github.com/wolfSSL/wolfssl/pull/10102"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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-662P-8MX9-XVC4
Vulnerability from github – Published: 2022-10-15 12:01 – Updated: 2022-10-18 19:00
VLAI
Details
In sensor driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service in kernel.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-39126"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-14T19:15:00Z",
"severity": "MODERATE"
},
"details": "In sensor driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service in kernel.",
"id": "GHSA-662p-8mx9-xvc4",
"modified": "2022-10-18T19:00:30Z",
"published": "2022-10-15T12:01:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39126"
},
{
"type": "WEB",
"url": "https://www.unisoc.com/en_us/secy/announcementDetail/1575654905820020738"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6647-2GMJ-C8H8
Vulnerability from github – Published: 2022-05-13 01:02 – Updated: 2022-05-13 01:02
VLAI
Details
In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2019-8956"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-01T19:29:00Z",
"severity": "HIGH"
},
"details": "In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the \"sctp_sendmsg()\" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.",
"id": "GHSA-6647-2gmj-c8h8",
"modified": "2022-05-13T01:02:54Z",
"published": "2022-05-13T01:02:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8956"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0"
},
{
"type": "WEB",
"url": "https://secuniaresearch.flexerasoftware.com/secunia_research/2019-5"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K12671141"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3930-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3930-2"
}
],
"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-6653-C3G4-G7JM
Vulnerability from github – Published: 2023-04-19 06:30 – Updated: 2024-04-04 03:34
VLAI
Details
Heap buffer overflow in sqlite in Google Chrome prior to 112.0.5615.137 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-2137"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-19T04:15:31Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in sqlite in Google Chrome prior to 112.0.5615.137 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-6653-c3g4-g7jm",
"modified": "2024-04-04T03:34:57Z",
"published": "2023-04-19T06:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2137"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2023/04/stable-channel-update-for-desktop_18.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1430644"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4AOSGAOPXLBK4A5ZRTVZ4M6QKVLSWMWG"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ES2CDRHR2Y4WY6DNDIAPYZFXJU3ZBFAV"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FEJZMAUB4XP44HSHEBDWEKFGA7DUHY42"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHHD6KNH4WLUE6JG6HRQZWNAJMHJ32X7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJQI63HWZFL6M26Q6UOHKDY6LD2PFC5Z"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLO7BL2MHZYPY6O3OAEAQL3SKYMGGO6M"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-17"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5393"
}
],
"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-6658-6G59-7RQJ
Vulnerability from github – Published: 2022-05-24 17:05 – Updated: 2022-05-24 17:05
VLAI
Details
In ih264d_init_decoder of ih264d_api.c, there is a possible out of bounds write due to a use after free. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation Product: Android Versions: Android-8.0, Android-8.1, Android-9, and Android-10 Android ID: A-142602711
{
"affected": [],
"aliases": [
"CVE-2020-0002"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-01-08T19:15:00Z",
"severity": "HIGH"
},
"details": "In ih264d_init_decoder of ih264d_api.c, there is a possible out of bounds write due to a use after free. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation Product: Android Versions: Android-8.0, Android-8.1, Android-9, and Android-10 Android ID: A-142602711",
"id": "GHSA-6658-6g59-7rqj",
"modified": "2022-05-24T17:05:53Z",
"published": "2022-05-24T17:05:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0002"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2020-01-01"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2020-01-04"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-665X-M64W-7FJJ
Vulnerability from github – Published: 2023-07-06 15:30 – Updated: 2025-11-04 21:30
VLAI
Details
Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the firewall_handler_set function with the ip and mac variables.
Severity
7.2 (High)
{
"affected": [],
"aliases": [
"CVE-2023-25083"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-06T15:15:12Z",
"severity": "HIGH"
},
"details": "Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the firewall_handler_set function with the ip and mac variables.",
"id": "GHSA-665x-m64w-7fjj",
"modified": "2025-11-04T21:30:34Z",
"published": "2023-07-06T15:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25083"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1716"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1716"
}
],
"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-6663-87FP-X34J
Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30
VLAI
Details
D-Link DAP-2622 DDP Firmware Upgrade Auth Password Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2622 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the DDP service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20075.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-35747"
],
"database_specific": {
"cwe_ids": [
"CWE-121",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T02:15:39Z",
"severity": "HIGH"
},
"details": "D-Link DAP-2622 DDP Firmware Upgrade Auth Password Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2622 routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the DDP service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20075.",
"id": "GHSA-6663-87fp-x34j",
"modified": "2024-05-03T03:30:53Z",
"published": "2024-05-03T03:30:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35747"
},
{
"type": "WEB",
"url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10349"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1252"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6666-6C7G-R8G5
Vulnerability from github – Published: 2022-05-13 01:28 – Updated: 2022-05-13 01:28
VLAI
Details
Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have an Out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-12754"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-20T19:29:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have an Out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.",
"id": "GHSA-6666-6c7g-r8g5",
"modified": "2022-05-13T01:28:14Z",
"published": "2022-05-13T01:28:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-12754"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb18-21.html"
},
{
"type": "WEB",
"url": "https://research.checkpoint.com/50-adobe-cves-in-50-days"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104701"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041250"
}
],
"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"
}
]
}
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.