CWE-119
DiscouragedImproper Restriction of Operations within the Bounds of a Memory Buffer
Abstraction: Class · Status: Stable
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
17491 vulnerabilities reference this CWE, most recent first.
GHSA-XXPR-8M4R-4FGQ
Vulnerability from github – Published: 2022-05-17 02:44 – Updated: 2022-05-17 02:44Microsoft PowerPoint for Mac 2011 allows a remote code execution vulnerability when the software fails to properly handle objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-0254 and CVE-2017-0265.
{
"affected": [],
"aliases": [
"CVE-2017-0264"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-05-12T14:29:00Z",
"severity": "HIGH"
},
"details": "Microsoft PowerPoint for Mac 2011 allows a remote code execution vulnerability when the software fails to properly handle objects in memory, aka \"Microsoft Office Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2017-0254 and CVE-2017-0265.",
"id": "GHSA-xxpr-8m4r-4fgq",
"modified": "2022-05-17T02:44:07Z",
"published": "2022-05-17T02:44:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-0264"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0264"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/98282"
}
],
"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-XXQP-4RFR-9PX7
Vulnerability from github – Published: 2025-06-09 09:31 – Updated: 2025-06-09 09:31A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.
{
"affected": [],
"aliases": [
"CVE-2025-5866"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-129"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-09T07:15:22Z",
"severity": "HIGH"
},
"details": "A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.",
"id": "GHSA-xxqp-4rfr-9px7",
"modified": "2025-06-09T09:31:04Z",
"published": "2025-06-09T09:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5866"
},
{
"type": "WEB",
"url": "https://github.com/RT-Thread/rt-thread/issues/10300"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.311625"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.311625"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.584127"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/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-XXQW-XRXQ-2H73
Vulnerability from github – Published: 2026-05-11 21:31 – Updated: 2026-05-12 15:31The issue was addressed with improved memory handling. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.
{
"affected": [],
"aliases": [
"CVE-2026-28990"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-11T21:18:58Z",
"severity": "HIGH"
},
"details": "The issue was addressed with improved memory handling. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.",
"id": "GHSA-xxqw-xrxq-2h73",
"modified": "2026-05-12T15:31:34Z",
"published": "2026-05-11T21:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28990"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127110"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127115"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127116"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127117"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127118"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127119"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127120"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-XXR7-CCHG-FR5V
Vulnerability from github – Published: 2023-09-05 09:30 – Updated: 2024-04-04 07:28Memory corruption in WLAN Firmware while parsing receieved GTK Keys in GTK KDE.
{
"affected": [],
"aliases": [
"CVE-2023-28581"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-05T07:15:14Z",
"severity": "CRITICAL"
},
"details": "Memory corruption in WLAN Firmware while parsing receieved GTK Keys in GTK KDE.",
"id": "GHSA-xxr7-cchg-fr5v",
"modified": "2024-04-04T07:28:25Z",
"published": "2023-09-05T09:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28581"
},
{
"type": "WEB",
"url": "https://www.qualcomm.com/company/product-security/bulletins/september-2023-bulletin"
}
],
"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-XXV2-RMF4-WFX2
Vulnerability from github – Published: 2026-02-26 21:31 – Updated: 2026-02-26 21:31Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service.
{
"affected": [],
"aliases": [
"CVE-2023-31364"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-26T21:28:47Z",
"severity": "HIGH"
},
"details": "Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service.",
"id": "GHSA-xxv2-rmf4-wfx2",
"modified": "2026-02-26T21:31:31Z",
"published": "2026-02-26T21:31:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31364"
},
{
"type": "WEB",
"url": "https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7059.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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-XXV5-9HQX-8G9Q
Vulnerability from github – Published: 2022-05-17 01:03 – Updated: 2025-04-11 03:40The Director module (dirapi.dll) in Adobe Shockwave Player before 11.5.9.615 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a Director movie with a crafted rcsL chunk containing a field whose value is used as a pointer offset, as exploited in the wild in October 2010. NOTE: some of these details are obtained from third party information.
{
"affected": [],
"aliases": [
"CVE-2010-3653"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2010-10-26T18:00:00Z",
"severity": "HIGH"
},
"details": "The Director module (dirapi.dll) in Adobe Shockwave Player before 11.5.9.615 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a Director movie with a crafted rcsL chunk containing a field whose value is used as a pointer offset, as exploited in the wild in October 2010. NOTE: some of these details are obtained from third party information.",
"id": "GHSA-xxv5-9hqx-8g9q",
"modified": "2025-04-11T03:40:39Z",
"published": "2022-05-17T01:03:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-3653"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/62688"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11285"
},
{
"type": "WEB",
"url": "http://www.abysssec.com/blog/2010/10/adobe-shockwave-player-rcsl-chunk-memory-corruption-0day"
},
{
"type": "WEB",
"url": "http://www.adobe.com/support/security/bulletins/apsb10-25.html"
},
{
"type": "WEB",
"url": "http://www.exploit-db.com/exploits/15296"
},
{
"type": "WEB",
"url": "http://www.kb.cert.org/vuls/id/402231"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/44291"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1024635"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2010/2752"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-XXV8-MWPQ-QMC2
Vulnerability from github – Published: 2022-05-17 00:39 – Updated: 2022-05-17 00:39Buffer overflow in BS.player 2.27 build 959 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in a .SRT file.
{
"affected": [],
"aliases": [
"CVE-2008-6583"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2009-04-03T18:30:00Z",
"severity": "HIGH"
},
"details": "Buffer overflow in BS.player 2.27 build 959 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in a .SRT file.",
"id": "GHSA-xxv8-mwpq-qmc2",
"modified": "2022-05-17T00:39:04Z",
"published": "2022-05-17T00:39:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-6583"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41841"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/5455"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/28811"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2008/1243/references"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-XXW5-VGJV-JC6G
Vulnerability from github – Published: 2026-06-29 18:31 – Updated: 2026-06-29 18:31A vulnerability was detected in liftoff-sr CIPster up to e8e9dba09bf56962807d3504b783ccdb6287f3e4. Affected by this issue is the function BufWriter::append of the component EtherNet IP Message Handler. Performing a manipulation results in out-of-bounds write. Remote exploitation of the attack is possible. The exploit is now public and may be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The patch is named 3a0159ed43125dcd024a1965f0289cb186bae9ff. To fix this issue, it is recommended to deploy a patch.
{
"affected": [],
"aliases": [
"CVE-2026-13592"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-29T18:16:37Z",
"severity": "MODERATE"
},
"details": "A vulnerability was detected in liftoff-sr CIPster up to e8e9dba09bf56962807d3504b783ccdb6287f3e4. Affected by this issue is the function BufWriter::append of the component EtherNet IP Message Handler. Performing a manipulation results in out-of-bounds write. Remote exploitation of the attack is possible. The exploit is now public and may be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The patch is named 3a0159ed43125dcd024a1965f0289cb186bae9ff. To fix this issue, it is recommended to deploy a patch.",
"id": "GHSA-xxw5-vgjv-jc6g",
"modified": "2026-06-29T18:31:55Z",
"published": "2026-06-29T18:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13592"
},
{
"type": "WEB",
"url": "https://github.com/liftoff-sr/CIPster/issues/48"
},
{
"type": "WEB",
"url": "https://github.com/liftoff-sr/CIPster/issues/48#issuecomment-4596727632"
},
{
"type": "WEB",
"url": "https://github.com/liftoff-sr/CIPster/commit/3a0159ed43125dcd024a1965f0289cb186bae9ff"
},
{
"type": "WEB",
"url": "https://github.com/liftoff-sr/CIPster"
},
{
"type": "WEB",
"url": "https://github.com/user-attachments/files/28452971/poc.zip"
},
{
"type": "WEB",
"url": "https://vuldb.com/cve/CVE-2026-13592"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/844566"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/374596"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/374596/cti"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-XXX6-G6JV-XQ96
Vulnerability from github – Published: 2026-06-29 21:32 – Updated: 2026-06-30 00:31The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the disclosure of process memory.
{
"affected": [],
"aliases": [
"CVE-2026-43740"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-29T20:17:37Z",
"severity": "MODERATE"
},
"details": "The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the disclosure of process memory.",
"id": "GHSA-xxx6-g6jv-xq96",
"modified": "2026-06-30T00:31:30Z",
"published": "2026-06-29T21:32:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43740"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127594"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127595"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127685"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-XXXQ-CHMP-67G4
Vulnerability from github – Published: 2020-06-26 16:27 – Updated: 2023-01-31 01:29Impact
Jsrsasign supports RSA PKCS#1 v1.5 (i.e. RSAES-PKCS1-v1_5) and RSA-OAEP encryption and decryption. Its encrypted message is represented as BigInteger. When there is a valid encrypted message, a crafted message with prepending zeros can be decrypted by this vulnerability.
- If you don't use RSA PKCS1-v1_5 or RSA-OAEP decryption, this vulnerability is not affected.
- Risk to forge contents of encrypted message is very low.
- Risk to raise memory corruption is low since jsrsasign uses BigInteger class.
Patches
Users using RSA PKCS1-v1_5 or RSA-OAEP decryption should upgrade to 8.0.18.
Workarounds
Reject RSA PKCS1-v1_5 or RSA-OAEP encrypted message with unnecessary prepending zeros.
References
https://nvd.nist.gov/vuln/detail/CVE-2020-14967 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967 https://vuldb.com/?id.157124 https://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt https://github.com/kjur/jsrsasign/issues/439
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "jsrsasign"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "8.0.18"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-14967"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-26T16:26:32Z",
"nvd_published_at": "2020-06-22T12:15:00Z",
"severity": "CRITICAL"
},
"details": "### Impact\nJsrsasign supports RSA PKCS#1 v1.5 (i.e. RSAES-PKCS1-v1_5) and RSA-OAEP encryption and decryption. Its encrypted message is represented as BigInteger. When there is a valid encrypted message, a crafted message with prepending zeros can be decrypted by this vulnerability.\n\n- If you don\u0027t use RSA PKCS1-v1_5 or RSA-OAEP decryption, this vulnerability is not affected.\n- Risk to forge contents of encrypted message is very low.\n- Risk to raise memory corruption is low since jsrsasign uses BigInteger class.\n\n### Patches\nUsers using RSA PKCS1-v1_5 or RSA-OAEP decryption should upgrade to 8.0.18.\n\n### Workarounds\nReject RSA PKCS1-v1_5 or RSA-OAEP encrypted message with unnecessary prepending zeros.\n\n### References\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-14967\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967\nhttps://vuldb.com/?id.157124\nhttps://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt\nhttps://github.com/kjur/jsrsasign/issues/439\n\n\n\n",
"id": "GHSA-xxxq-chmp-67g4",
"modified": "2023-01-31T01:29:40Z",
"published": "2020-06-26T16:27:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/kjur/jsrsasign/security/advisories/GHSA-xxxq-chmp-67g4"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14967"
},
{
"type": "WEB",
"url": "https://github.com/kjur/jsrsasign/issues/439"
},
{
"type": "WEB",
"url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14967"
},
{
"type": "PACKAGE",
"url": "https://github.com/kjur/jsrsasign"
},
{
"type": "WEB",
"url": "https://github.com/kjur/jsrsasign/releases/tag/8.0.17"
},
{
"type": "WEB",
"url": "https://github.com/kjur/jsrsasign/releases/tag/8.0.18"
},
{
"type": "WEB",
"url": "https://kjur.github.io/jsrsasign"
},
{
"type": "WEB",
"url": "https://kjur.github.io/jsrsasign/api/symbols/KJUR.crypto.Cipher.html#.decrypt"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200724-0001"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.157124"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/package/jsrsasign"
}
],
"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"
}
],
"summary": "RSA PKCS#1 decryption vulnerability with prepending zeros in jsrsasign"
}
Mitigation MIT-3
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
CAPEC-10: Buffer Overflow via Environment Variables
This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
CAPEC-100: Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
CAPEC-123: Buffer Manipulation
An adversary manipulates an application's interaction with a buffer in an attempt to read or modify data they shouldn't have access to. Buffer attacks are distinguished in that it is the buffer space itself that is the target of the attack rather than any code responsible for interpreting the content of the buffer. In virtually all buffer attacks the content that is placed in the buffer is immaterial. Instead, most buffer attacks involve retrieving or providing more input than can be stored in the allocated buffer, resulting in the reading or overwriting of other unintended program memory.
CAPEC-14: Client-side Injection-induced Buffer Overflow
This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service. This hostile service is created to deliver the correct content to the client software. For example, if the client-side application is a browser, the service will host a webpage that the browser loads.
CAPEC-24: Filter Failure through Buffer Overflow
In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
CAPEC-42: MIME Conversion
An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
CAPEC-44: Overflow Binary Resource File
An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the adversary access to the execution stack and execute arbitrary code in the target process.
CAPEC-45: Buffer Overflow via Symbolic Links
This type of attack leverages the use of symbolic links to cause buffer overflows. An adversary can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
CAPEC-46: Overflow Variables and Tags
This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The adversary crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
CAPEC-47: Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
CAPEC-8: Buffer Overflow in an API Call
This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An adversary who has knowledge of known vulnerable libraries or shared code can easily target software that makes use of these libraries. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
CAPEC-9: Buffer Overflow in Local Command-Line Utilities
This attack targets command-line utilities available in a number of shells. An adversary can leverage a vulnerability found in a command-line utility to escalate privilege to root.