Common Weakness Enumeration
CWE-190
AllowedInteger Overflow or Wraparound
Abstraction: Base · Status: Stable
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
3867 vulnerabilities reference this CWE, most recent first.
GHSA-WQR9-HJ2X-XFMW
Vulnerability from github – Published: 2022-05-13 01:24 – Updated: 2022-05-13 01:24
VLAI
Details
Integer overflow in the WebGL subsystem in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (invalid write operation) via crafted data.
{
"affected": [],
"aliases": [
"CVE-2012-5835"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-11-21T12:55:00Z",
"severity": "HIGH"
},
"details": "Integer overflow in the WebGL subsystem in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (invalid write operation) via crafted data.",
"id": "GHSA-wqr9-hj2x-xfmw",
"modified": "2022-05-13T01:24:24Z",
"published": "2022-05-13T01:24:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-5835"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=790879"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/80185"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16603"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html"
},
{
"type": "WEB",
"url": "http://osvdb.org/87601"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2012-1482.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2012-1483.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51359"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51360"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51369"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51370"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51381"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51434"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51439"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51440"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:173"
},
{
"type": "WEB",
"url": "http://www.mozilla.org/security/announce/2012/mfsa2012-106.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/56643"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1636-1"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1638-1"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1638-2"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1638-3"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WR2F-8J8F-CM5H
Vulnerability from github – Published: 2023-10-02 03:30 – Updated: 2024-04-04 07:59
VLAI
Details
In vpu, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07767817; Issue ID: ALPS07767817.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-32828"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-02T03:15:10Z",
"severity": "MODERATE"
},
"details": "In vpu, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07767817; Issue ID: ALPS07767817.",
"id": "GHSA-wr2f-8j8f-cm5h",
"modified": "2024-04-04T07:59:48Z",
"published": "2023-10-02T03:30:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32828"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/October-2023"
}
],
"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-WR62-C79Q-CV37
Vulnerability from github – Published: 2025-07-10 21:31 – Updated: 2026-03-06 21:44
VLAI
Summary
Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits
Details
For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected.
Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.43"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0.M1"
},
{
"fixed": "9.0.107"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "8.5.0"
},
{
"last_affected": "8.5.100"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.43"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0.M1"
},
{
"fixed": "9.0.107"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "8.5.0"
},
{
"last_affected": "8.5.100"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-52520"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": true,
"github_reviewed_at": "2025-07-11T13:47:50Z",
"nvd_published_at": "2025-07-10T19:15:25Z",
"severity": "HIGH"
},
"details": "For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.",
"id": "GHSA-wr62-c79q-cv37",
"modified": "2026-03-06T21:44:13Z",
"published": "2025-07-10T21:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52520"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90db"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45c"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/07/10/12"
}
],
"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": "Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits"
}
GHSA-WRJH-FHFJ-XHFM
Vulnerability from github – Published: 2026-01-16 18:31 – Updated: 2026-01-16 21:30
VLAI
Details
In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a large update size to resize() in kdb_log.c. An authenticated attacker can cause an out-of-bounds write and kadmind daemon crash.
Severity
7.1 (High)
{
"affected": [],
"aliases": [
"CVE-2025-24528"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-16T18:16:06Z",
"severity": "HIGH"
},
"details": "In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a large update size to resize() in kdb_log.c. An authenticated attacker can cause an out-of-bounds write and kadmind daemon crash.",
"id": "GHSA-wrjh-fhfj-xhfm",
"modified": "2026-01-16T21:30:36Z",
"published": "2026-01-16T18:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24528"
},
{
"type": "WEB",
"url": "https://github.com/krb5/krb5/commit/78ceba024b64d49612375be4a12d1c066b0bfbd0"
},
{
"type": "WEB",
"url": "https://github.com/krb5/krb5/compare/krb5-1.21.3-final...krb5-1.22-final"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00029.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WV24-X983-G4G9
Vulnerability from github – Published: 2024-10-23 00:31 – Updated: 2024-10-23 21:30
VLAI
Details
Xlight FTP Server <3.9.4.3 has an integer overflow vulnerability in the packet parsing logic of the SFTP server, which can lead to a heap overflow with attacker-controlled content.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2024-46483"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-22T22:15:05Z",
"severity": "CRITICAL"
},
"details": "Xlight FTP Server \u003c3.9.4.3 has an integer overflow vulnerability in the packet parsing logic of the SFTP server, which can lead to a heap overflow with attacker-controlled content.",
"id": "GHSA-wv24-x983-g4g9",
"modified": "2024-10-23T21:30:28Z",
"published": "2024-10-23T00:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46483"
},
{
"type": "WEB",
"url": "https://github.com/kn32/cve-2024-46483"
}
],
"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-WVM2-72HM-JH6V
Vulnerability from github – Published: 2022-03-29 00:01 – Updated: 2022-04-05 00:00
VLAI
Details
Mojang Bedrock Dedicated Server 1.18.2 is affected by an integer overflow leading to a bound check bypass caused by PurchaseReceiptPacket::_read (packet deserializer).
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2022-23884"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-28T13:15:00Z",
"severity": "CRITICAL"
},
"details": "Mojang Bedrock Dedicated Server 1.18.2 is affected by an integer overflow leading to a bound check bypass caused by PurchaseReceiptPacket::_read (packet deserializer).",
"id": "GHSA-wvm2-72hm-jh6v",
"modified": "2022-04-05T00:00:56Z",
"published": "2022-03-29T00:01:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23884"
},
{
"type": "WEB",
"url": "https://s3.bmp.ovh/imgs/2022/01/962e0c75f5969cfb.png"
}
],
"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-WVP9-CM8C-37MR
Vulnerability from github – Published: 2024-03-15 03:30 – Updated: 2024-03-15 03:30
VLAI
Details
Integer Overflow or Wraparound vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series and MELSEC-L Series CPU modules allows a remote unauthenticated attacker to execute malicious code on a target product by sending a specially crafted packet.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2024-1916"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-15T01:15:58Z",
"severity": "CRITICAL"
},
"details": "Integer Overflow or Wraparound vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series and MELSEC-L Series CPU modules allows a remote unauthenticated attacker to execute malicious code on a target product by sending a specially crafted packet.",
"id": "GHSA-wvp9-cm8c-37mr",
"modified": "2024-03-15T03:30:52Z",
"published": "2024-03-15T03:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1916"
},
{
"type": "WEB",
"url": "https://jvn.jp/vu/JVNVU99690199"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-074-14"
},
{
"type": "WEB",
"url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-024_en.pdf"
}
],
"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-WW97-C23F-XWW5
Vulnerability from github – Published: 2023-10-11 18:30 – Updated: 2025-11-04 21:30
VLAI
Details
Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger these vulnerabilities.This integer overflow result is used as argument for the realloc function.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2023-35966"
],
"database_specific": {
"cwe_ids": [
"CWE-190",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-11T16:15:13Z",
"severity": "CRITICAL"
},
"details": "Two heap-based buffer overflow vulnerabilities exist in the httpd manage_post functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger these vulnerabilities.This integer overflow result is used as argument for the realloc function.",
"id": "GHSA-ww97-c23f-xww5",
"modified": "2025-11-04T21:30:44Z",
"published": "2023-10-11T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35966"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1787"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1787"
}
],
"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-WWG9-HV2R-MJ8W
Vulnerability from github – Published: 2026-02-24 15:30 – Updated: 2026-06-30 03:35
VLAI
Details
Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-2774"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-24T14:16:25Z",
"severity": "CRITICAL"
},
"details": "Integer overflow in the Audio/Video component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, and Firefox ESR \u003c 140.8.",
"id": "GHSA-wwg9-hv2r-mj8w",
"modified": "2026-06-30T03:35:44Z",
"published": "2026-02-24T15:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2774"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3338"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3982"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3983"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3984"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4022"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4152"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4260"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4432"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-2774"
},
{
"type": "WEB",
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GHSA-WWHV-5555-4WC2
Vulnerability from github – Published: 2022-05-14 03:06 – Updated: 2022-05-14 03:06
VLAI
Details
The mintToken function of a smart contract implementation for GEMCHAIN (GEM), an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to any value.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2018-13155"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-05T02:29:00Z",
"severity": "HIGH"
},
"details": "The mintToken function of a smart contract implementation for GEMCHAIN (GEM), an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to any value.",
"id": "GHSA-wwhv-5555-4wc2",
"modified": "2022-05-14T03:06:33Z",
"published": "2022-05-14T03:06:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-13155"
},
{
"type": "WEB",
"url": "https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20integer%20overflow.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
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.
- If possible, choose a language or compiler that performs automatic bounds checking.
Mitigation MIT-4
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 [REF-1482].
- Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
Mitigation MIT-8
Implementation
Strategy: Input Validation
- Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
- Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
Mitigation MIT-36
Implementation
- Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
- Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Mitigation MIT-15
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-26
Implementation
Strategy: Compilation or Build Hardening
Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.