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.
3934 vulnerabilities reference this CWE, most recent first.
GHSA-3896-RGXR-MXJP
Vulnerability from github – Published: 2022-05-24 16:51 – Updated: 2024-04-04 01:25An integer overflow issue has been reported in the general_composite_rect() function in pixman prior to version 0.32.8. An attacker could exploit this issue to cause an application using pixman to crash or, potentially, execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2015-5297"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-31T23:15:00Z",
"severity": "CRITICAL"
},
"details": "An integer overflow issue has been reported in the general_composite_rect() function in pixman prior to version 0.32.8. An attacker could exploit this issue to cause an application using pixman to crash or, potentially, execute arbitrary code.",
"id": "GHSA-3896-rgxr-mxjp",
"modified": "2024-04-04T01:25:42Z",
"published": "2022-05-24T16:51:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5297"
},
{
"type": "WEB",
"url": "https://bugs.freedesktop.org/show_bug.cgi?id=92027"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-5297"
}
],
"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"
}
]
}
GHSA-38C5-483C-4QQP
Vulnerability from github – Published: 2026-04-24 15:57 – Updated: 2026-05-13 13:37Summary
An integer overflow in Grid::expand_rows() can corrupt the relationship between the grid’s logical dimensions and its backing storage. After the internal invariant is broken, the safe API get() may invoke get_unchecked() with an invalid index, resulting in Undefined Behavior.
Details
Tested Version: grid = "1.0.0"
expand_rows() computes the new backing length using unchecked arithmetic:
self.data.len() + rows * self.cols
If rows * self.cols or the subsequent addition overflows usize, the result wraps in release builds and self.data may be resized to a length much smaller than logically required.
After that, if the grid is in ColumnMajor order, the function performs in-place rotation using indices derived from:
let total_rows = self.rows + row_added;
let col_idx = i * total_rows;
self.data[col_idx..col_idx + total_rows + i].rotate_right(i);
These computations also rely on the assumption that the backing storage has been resized to the correct length. Once the earlier length computation has wrapped, this assumption no longer holds, so the function may operate on invalid ranges or otherwise enter an inconsistent state.
Finally, the function updates logical metadata with:
self.rows += rows;
As a result, the grid can end up with logical dimensions that no longer match the actual backing storage. Subsequent safe API calls such as get() may then rely on corrupted metadata and reach unsafe internal accesses, resulting in invalid unchecked access and Undefined Behavior.
PoC
#![forbid(unsafe_code)]
use grid::Grid;
fn main() {
let mut g = Grid::from_vec(vec![1u8, 2u8], 2);
g.expand_rows(usize::MAX / 2);
g.get(0, 0); // triggers UB in get_unchecked
}
Impact
- Invalid unchecked access (
get_unchecked) reached via safe API - Confirmed by Miri (release-mode):
error: Undefined Behavior: `assume` called with `false`
--> ..../grid-1.0.0/src/lib.rs:527:9
|
527 | self.data.get_unchecked(index)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here
- Potential crash / denial of service in release-builds (e.g., SIGSEGV, Illegal instruction)
- Violates Rust’s safety guarantees despite using only safe code
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.0.0"
},
"package": {
"ecosystem": "crates.io",
"name": "grid"
},
"ranges": [
{
"events": [
{
"introduced": "0.17.0"
},
{
"fixed": "1.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-42199"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-24T15:57:36Z",
"nvd_published_at": "2026-05-08T22:16:31Z",
"severity": "MODERATE"
},
"details": "### Summary\nAn integer overflow in `Grid::expand_rows()` can corrupt the relationship between the grid\u2019s logical dimensions and its backing storage. After the internal invariant is broken, the safe API get() may invoke get_unchecked() with an invalid index, resulting in Undefined Behavior.\n\n### Details\nTested Version: grid = \"1.0.0\"\n\nexpand_rows() computes the new backing length using unchecked arithmetic:\n\n`self.data.len() + rows * self.cols\n`\n\nIf rows * self.cols or the subsequent addition overflows usize, the result wraps in release builds and self.data may be resized to a length much smaller than logically required.\n\nAfter that, if the grid is in ColumnMajor order, the function performs in-place rotation using indices derived from:\n\n```\nlet total_rows = self.rows + row_added;\nlet col_idx = i * total_rows;\nself.data[col_idx..col_idx + total_rows + i].rotate_right(i);\n```\n\nThese computations also rely on the assumption that the backing storage has been resized to the correct length. Once the earlier length computation has wrapped, this assumption no longer holds, so the function may operate on invalid ranges or otherwise enter an inconsistent state.\n\nFinally, the function updates logical metadata with:\n\n`self.rows += rows;\n`\n\nAs a result, the grid can end up with logical dimensions that no longer match the actual backing storage. Subsequent safe API calls such as get() may then rely on corrupted metadata and reach unsafe internal accesses, resulting in invalid unchecked access and Undefined Behavior.\n\n### PoC\n```rust\n#![forbid(unsafe_code)]\n\nuse grid::Grid;\n\nfn main() {\n let mut g = Grid::from_vec(vec![1u8, 2u8], 2);\n\n g.expand_rows(usize::MAX / 2);\n\n g.get(0, 0); // triggers UB in get_unchecked\n}\n```\n\n### Impact\n- Invalid unchecked access (`get_unchecked`) reached via safe API\n- Confirmed by Miri (release-mode):\n\n```\nerror: Undefined Behavior: `assume` called with `false`\n --\u003e ..../grid-1.0.0/src/lib.rs:527:9\n |\n527 | self.data.get_unchecked(index)\n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here\n\n```\n- Potential crash / denial of service in release-builds (e.g., SIGSEGV, Illegal instruction)\n- Violates Rust\u2019s safety guarantees despite using only safe code",
"id": "GHSA-38c5-483c-4qqp",
"modified": "2026-05-13T13:37:34Z",
"published": "2026-04-24T15:57:36Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/becheran/grid/security/advisories/GHSA-38c5-483c-4qqp"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42199"
},
{
"type": "WEB",
"url": "https://github.com/becheran/grid/commit/be213bd3528727148bef2d523c89e95d1fd9c072"
},
{
"type": "PACKAGE",
"url": "https://github.com/becheran/grid"
},
{
"type": "WEB",
"url": "https://github.com/becheran/grid/releases/tag/v1.0.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Grid: Integer Overflow in Grid::expand_rows Leads to Safe-API Undefined Behavior"
}
GHSA-38J5-X223-737F
Vulnerability from github – Published: 2022-05-24 17:34 – Updated: 2023-05-22 15:30Integer overflow in subsystem for Intel(R) AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 14.0.45 may allow a privileged user to potentially enable escalation of privilege via local access.
{
"affected": [],
"aliases": [
"CVE-2020-8760"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-12T18:15:00Z",
"severity": "HIGH"
},
"details": "Integer overflow in subsystem for Intel(R) AMT versions before 11.8.80, 11.12.80, 11.22.80, 12.0.70, 14.0.45 may allow a privileged user to potentially enable escalation of privilege via local access.",
"id": "GHSA-38j5-x223-737f",
"modified": "2023-05-22T15:30:15Z",
"published": "2022-05-24T17:34:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8760"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20201113-0003"
},
{
"type": "WEB",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00391"
}
],
"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-38MJ-2RW7-PF37
Vulnerability from github – Published: 2022-05-13 01:39 – Updated: 2022-05-13 01:39The mintToken function of a smart contract implementation for ECToints (ECT) (Contract Name: ECPoints), 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.
{
"affected": [],
"aliases": [
"CVE-2018-13178"
],
"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 ECToints (ECT) (Contract Name: ECPoints), 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-38mj-2rw7-pf37",
"modified": "2022-05-13T01:39:42Z",
"published": "2022-05-13T01:39:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-13178"
},
{
"type": "WEB",
"url": "https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20integer%20overflow.md"
},
{
"type": "WEB",
"url": "https://github.com/BlockChainsSecurity/EtherTokens/tree/master/ECPoints"
}
],
"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:N",
"type": "CVSS_V3"
}
]
}
GHSA-38P4-2H4M-96MC
Vulnerability from github – Published: 2025-09-17 21:30 – Updated: 2025-09-17 21:30Ashlar-Vellum Cobalt LI File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 LI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25476.
{
"affected": [],
"aliases": [
"CVE-2025-7982"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-17T21:15:39Z",
"severity": "HIGH"
},
"details": "Ashlar-Vellum Cobalt LI File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 LI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25476.",
"id": "GHSA-38p4-2h4m-96mc",
"modified": "2025-09-17T21:30:43Z",
"published": "2025-09-17T21:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7982"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-630"
}
],
"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-38VH-JG38-2RQP
Vulnerability from github – Published: 2022-05-24 16:48 – Updated: 2022-07-30 00:00Integer overflow in download manager in Google Chrome prior to 75.0.3770.80 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2019-5829"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-27T17:15:00Z",
"severity": "HIGH"
},
"details": "Integer overflow in download manager in Google Chrome prior to 75.0.3770.80 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.",
"id": "GHSA-38vh-jg38-2rqp",
"modified": "2022-07-30T00:00:29Z",
"published": "2022-05-24T16:48:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5829"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2019/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/958533"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CPM7VPE27DUNJLXM4F5PAAEFFWOEND6X"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EI3DGFVT7CKJO6YVMP55R35HCDVEIC4Z"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FKN4GPMBQ3SDXWB4HL45II5CZ7P2E4AI"
},
{
"type": "WEB",
"url": "https://seclists.org/bugtraq/2019/Aug/19"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201908-18"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2019/dsa-4500"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00085.html"
}
],
"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-3943-4F4J-GCGJ
Vulnerability from github – Published: 2025-03-07 21:31 – Updated: 2025-03-07 21:31In the Linux kernel, the following vulnerability has been resolved:
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be overflow. To fix, we can follow what udpv6 does and subtract the transhdrlen from the max.
{
"affected": [],
"aliases": [
"CVE-2022-49727"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:48Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in l2tp_ip6_sendmsg\n\nWhen len \u003e= INT_MAX - transhdrlen, ulen = len + transhdrlen will be\noverflow. To fix, we can follow what udpv6 does and subtract the\ntranshdrlen from the max.",
"id": "GHSA-3943-4f4j-gcgj",
"modified": "2025-03-07T21:31:05Z",
"published": "2025-03-07T21:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49727"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915"
}
],
"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-395V-WW5M-QQ2X
Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2022-05-24 19:01Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple days).
{
"affected": [],
"aliases": [
"CVE-2020-28009"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-06T13:15:00Z",
"severity": "HIGH"
},
"details": "Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple days).",
"id": "GHSA-395v-ww5m-qq2x",
"modified": "2022-05-24T19:01:40Z",
"published": "2022-05-24T19:01:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28009"
},
{
"type": "WEB",
"url": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28009-STDIN.txt"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-397J-8G2V-QC2H
Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2024-04-04 01:08ImageMagick before 7.0.8-50 has an integer overflow vulnerability in the function TIFFSeekCustomStream in coders/tiff.c.
{
"affected": [],
"aliases": [
"CVE-2019-13136"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-01T20:15:00Z",
"severity": "HIGH"
},
"details": "ImageMagick before 7.0.8-50 has an integer overflow vulnerability in the function TIFFSeekCustomStream in coders/tiff.c.",
"id": "GHSA-397j-8g2v-qc2h",
"modified": "2024-04-04T01:08:34Z",
"published": "2022-05-24T16:49:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13136"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/issues/1602"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/commit/fe5f4b85e6b1b54d3b4588a77133c06ade46d891"
},
{
"type": "WEB",
"url": "https://support.f5.com/csp/article/K03512441?utm_source=f5support\u0026amp%3Butm_medium=RSS"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00069.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-398C-7M57-4F84
Vulnerability from github – Published: 2022-05-17 03:41 – Updated: 2022-05-17 03:41Multiple integer overflows in drivers/crypto/msm/qcedev.c in the Qualcomm cryptographic engine driver in Android before 2016-10-05 on Nexus 5X, Nexus 6, Nexus 6P, and Android One devices allow attackers to gain privileges via a crafted application, aka Android internal bug 29999665 and Qualcomm internal bug CR 1046507.
{
"affected": [],
"aliases": [
"CVE-2016-3935"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-10-10T10:59:00Z",
"severity": "HIGH"
},
"details": "Multiple integer overflows in drivers/crypto/msm/qcedev.c in the Qualcomm cryptographic engine driver in Android before 2016-10-05 on Nexus 5X, Nexus 6, Nexus 6P, and Android One devices allow attackers to gain privileges via a crafted application, aka Android internal bug 29999665 and Qualcomm internal bug CR 1046507.",
"id": "GHSA-398c-7m57-4f84",
"modified": "2022-05-17T03:41:31Z",
"published": "2022-05-17T03:41:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-3935"
},
{
"type": "WEB",
"url": "https://source.codeaurora.org/quic/la/kernel/msm-3.18/commit/?id=5f69ccf3b011c1d14a1b1b00dbaacf74307c9132"
},
{
"type": "WEB",
"url": "http://source.android.com/security/bulletin/2016-10-01.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/93327"
}
],
"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"
}
]
}
Mitigation
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
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
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
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
- 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
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
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.