Common Weakness Enumeration
CWE-754
Allowed-with-ReviewImproper Check for Unusual or Exceptional Conditions
Abstraction: Class · Status: Incomplete
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
909 vulnerabilities reference this CWE, most recent first.
GHSA-86MV-R2JG-GPM3
Vulnerability from github – Published: 2022-05-24 17:33 – Updated: 2022-05-24 17:33
VLAI
Details
Improper conditions check in BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
{
"affected": [],
"aliases": [
"CVE-2020-0587"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-12T18:15:00Z",
"severity": "MODERATE"
},
"details": "Improper conditions check in BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.",
"id": "GHSA-86mv-r2jg-gpm3",
"modified": "2022-05-24T17:33:29Z",
"published": "2022-05-24T17:33:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0587"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20201113-0001"
},
{
"type": "WEB",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00358"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-86VC-MG26-FJ6X
Vulnerability from github – Published: 2026-03-25 18:31 – Updated: 2026-03-30 22:21
VLAI
Summary
Mattermost: Authenticated DoS through failure to prevent rendering of external SVGs on link embeds
Details
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub. Mattermost Advisory ID: MMSA-2026-00595
Severity
4.3 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "11.4.0-rc1"
},
{
"fixed": "11.4.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "11.3.0-rc1"
},
{
"fixed": "11.3.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "11.2.0-rc1"
},
{
"fixed": "11.2.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "8.0.0-20260105080200-d27a2195068d"
},
{
"fixed": "8.0.0-20260217110922-b7d4a1f1f59b"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "10.11.0-rc1"
},
{
"fixed": "10.11.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-20719"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-30T22:21:55Z",
"nvd_published_at": "2026-03-25T17:16:30Z",
"severity": "MODERATE"
},
"details": "Mattermost versions 11.4.x \u003c= 11.4.0, 11.3.x \u003c= 11.3.1, 11.2.x \u003c= 11.2.3, 10.11.x \u003c= 10.11.11 fail to prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub. Mattermost Advisory ID: MMSA-2026-00595",
"id": "GHSA-86vc-mg26-fj6x",
"modified": "2026-03-30T22:21:55Z",
"published": "2026-03-25T18:31:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20719"
},
{
"type": "PACKAGE",
"url": "https://github.com/mattermost/mattermost"
},
{
"type": "WEB",
"url": "https://mattermost.com/security-updates"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Mattermost: Authenticated DoS through failure to prevent rendering of external SVGs on link embeds "
}
GHSA-8768-346V-CVR2
Vulnerability from github – Published: 2026-03-24 15:30 – Updated: 2026-06-30 03:35
VLAI
Details
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2026-4697"
],
"database_specific": {
"cwe_ids": [
"CWE-754",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-24T13:16:05Z",
"severity": "HIGH"
},
"details": "Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox \u003c 149 and Firefox ESR \u003c 140.9.",
"id": "GHSA-8768-346v-cvr2",
"modified": "2026-06-30T03:35:58Z",
"published": "2026-03-24T15:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4697"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8286"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8287"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8288"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8289"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8290"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8315"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8427"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8850"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-4697"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2020422"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450729"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4697.json"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-20"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-22"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-23"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-24"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5930"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5931"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5932"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6188"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6342"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:6917"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7837"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7838"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7839"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7840"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7841"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7842"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7843"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7845"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:7858"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8284"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:8285"
}
],
"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"
}
]
}
GHSA-876P-R622-7CHQ
Vulnerability from github – Published: 2023-08-15 00:31 – Updated: 2024-04-04 06:56
VLAI
Details
In onAccessPointChanged of AccessPointPreference.java, there is a possible way for unprivileged apps to receive a broadcast about WiFi access point change and its BSSID or SSID due to a precondition check failure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-21230"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-14T22:15:12Z",
"severity": "MODERATE"
},
"details": "In onAccessPointChanged of AccessPointPreference.java, there is a possible way for unprivileged apps to receive a broadcast about WiFi access point change and its BSSID or SSID due to a precondition check failure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.\n\n",
"id": "GHSA-876p-r622-7chq",
"modified": "2024-04-04T06:56:18Z",
"published": "2023-08-15T00:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21230"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/wear/2023-08-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-87F4-VH8G-RM8G
Vulnerability from github – Published: 2022-08-17 00:00 – Updated: 2022-08-19 00:00
VLAI
Details
SWFMill commit 53d7690 was discovered to contain a segmentation violation via SWF::Reader::getWord().
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-36145"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-16T21:15:00Z",
"severity": "MODERATE"
},
"details": "SWFMill commit 53d7690 was discovered to contain a segmentation violation via SWF::Reader::getWord().",
"id": "GHSA-87f4-vh8g-rm8g",
"modified": "2022-08-19T00:00:23Z",
"published": "2022-08-17T00:00:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36145"
},
{
"type": "WEB",
"url": "https://github.com/djcsdy/swfmill/issues/64"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8869-J2Q7-JF8G
Vulnerability from github – Published: 2025-05-13 21:30 – Updated: 2025-05-13 21:30
VLAI
Details
Improper conditions check for some Intel(R) Arc™ GPU may allow an authenticated user to potentially enable denial of service via local access.
Severity
5.6 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-28036"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-13T21:15:59Z",
"severity": "MODERATE"
},
"details": "Improper conditions check for some Intel(R) Arc\u2122 GPU may allow an authenticated user to potentially enable denial of service via local access.",
"id": "GHSA-8869-j2q7-jf8g",
"modified": "2025-05-13T21:30:54Z",
"published": "2025-05-13T21:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-28036"
},
{
"type": "WEB",
"url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01252.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/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-88GP-69JR-39M4
Vulnerability from github – Published: 2023-04-10 03:30 – Updated: 2025-03-19 18:30
VLAI
Details
An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-30456"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-10T02:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.",
"id": "GHSA-88gp-69jr-39m4",
"modified": "2025-03-19T18:30:38Z",
"published": "2023-04-10T03:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-30456"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/112e66017bff7f2837030f34c2bc19501e9212d5"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230511-0007"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html"
}
],
"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-89FM-3W27-7C7Q
Vulnerability from github – Published: 2024-08-14 21:33 – Updated: 2025-01-31 15:30
VLAI
Details
CVE-2024-40619 IMPACT
A denial-of-service vulnerability exists in the affected products. The vulnerability occurs when a malformed CIP packet is sent over the network to the device and results in a major nonrecoverable fault causing a denial-of-service.
Severity
{
"affected": [],
"aliases": [
"CVE-2024-40619"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-14T20:15:12Z",
"severity": "HIGH"
},
"details": "CVE-2024-40619 IMPACT\n\nA denial-of-service vulnerability exists in the affected products. The vulnerability occurs when a malformed CIP packet is sent over the network to the device and results in a major nonrecoverable fault causing a denial-of-service.",
"id": "GHSA-89fm-3w27-7c7q",
"modified": "2025-01-31T15:30:42Z",
"published": "2024-08-14T21:33:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40619"
},
{
"type": "WEB",
"url": "https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD%201690.html"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-8C3G-6QH9-4P9Q
Vulnerability from github – Published: 2024-10-11 18:32 – Updated: 2024-10-11 18:32
VLAI
Details
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
Severity
{
"affected": [],
"aliases": [
"CVE-2024-47503"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-11T16:15:11Z",
"severity": "HIGH"
},
"details": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and\u00a0SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).\n\nIf in a multicast scenario a sequence of \n\nspecific\u00a0PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption.\nThis issue affects Junos OS on SRX 4600 and SRX 5000 Series:\n\n\n\n * All versions before 21.4R3-S9,\n * 22.2 versions before 22.2R3-S5,\n * 22.3 versions before 22.3R3-S4,\n * 22.4 versions before 22.4R3-S4,\n * 23.2 versions before 23.2R2-S2,\n * 23.4 versions before 23.4R2,\u00a0\n * 24.2 versions before 24.2R1-S1, 24.2R2.",
"id": "GHSA-8c3g-6qh9-4p9q",
"modified": "2024-10-11T18:32:49Z",
"published": "2024-10-11T18:32:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47503"
},
{
"type": "WEB",
"url": "https://supportportal.juniper.net/JSA88133"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:Y/R:A/V:X/RE:M/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-8F5J-CV86-Q574
Vulnerability from github – Published: 2023-02-16 21:30 – Updated: 2023-03-02 15:30
VLAI
Details
Improper conditions check in the Open CAS software maintained by Intel(R) before version 22.3.1 may allow an authenticated user to potentially enable denial of service via local access.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-29523"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-16T21:15:00Z",
"severity": "MODERATE"
},
"details": "Improper conditions check in the Open CAS software maintained by Intel(R) before version 22.3.1 may allow an authenticated user to potentially enable denial of service via local access.",
"id": "GHSA-8f5j-cv86-q574",
"modified": "2023-03-02T15:30:18Z",
"published": "2023-02-16T21:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-29523"
},
{
"type": "WEB",
"url": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00736.html"
}
],
"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"
}
]
}
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.
- Choose languages with features such as exception handling that force the programmer to anticipate unusual conditions that may generate exceptions. Custom exceptions may need to be developed to handle unusual business-logic conditions. Be careful not to pass sensitive exceptions back to the user (CWE-209, CWE-248).
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is expected.
Mitigation
Implementation
If using exception handling, catch and throw specific exceptions instead of overly-general exceptions (CWE-396, CWE-397). Catch and handle exceptions as locally as possible so that exceptions do not propagate too far up the call stack (CWE-705). Avoid unchecked or uncaught exceptions where feasible (CWE-248).
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
- Exposing additional information to a potential attacker in the context of an exceptional condition can help the attacker determine what attack vectors are most likely to succeed beyond DoS.
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-38
Architecture and Design
Implementation
If the program must fail, ensure that it fails gracefully (fails closed). There may be a temptation to simply let the program fail poorly in cases such as low memory conditions, but an attacker may be able to assert control before the software has fully exited. Alternately, an uncontrolled failure could cause cascading problems with other downstream components; for example, the program could send a signal to a downstream process so the process immediately knows that a problem has occurred and has a better chance of recovery.
Mitigation
Architecture and Design
Use system limits, which should help to prevent resource exhaustion. However, the product should still handle low resource conditions since they may still occur.
No CAPEC attack patterns related to this CWE.