CWE-367
AllowedTime-of-check Time-of-use (TOCTOU) Race Condition
Abstraction: Base · Status: Incomplete
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
1198 vulnerabilities reference this CWE, most recent first.
GHSA-WF4J-QRXG-6HF2
Vulnerability from github – Published: 2026-01-22 21:33 – Updated: 2026-01-22 21:33Dell PowerScale OneFS, versions 9.5.0.0 through 9.5.1.5, versions 9.6.0.0 through 9.7.1.10, versions 9.8.0.0 through 9.10.1.3, versions starting from 9.11.0.0 and prior to 9.13.0.0, contains a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A low privileged attacker with adjacent network access could potentially exploit this vulnerability, leading to denial of service.
{
"affected": [],
"aliases": [
"CVE-2026-22281"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-22T20:16:13Z",
"severity": "LOW"
},
"details": "Dell PowerScale OneFS, versions 9.5.0.0 through 9.5.1.5, versions 9.6.0.0 through 9.7.1.10, versions 9.8.0.0 through 9.10.1.3, versions starting from 9.11.0.0 and prior to 9.13.0.0, contains a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A low privileged attacker with adjacent network access could potentially exploit this vulnerability, leading to denial of service.",
"id": "GHSA-wf4j-qrxg-6hf2",
"modified": "2026-01-22T21:33:47Z",
"published": "2026-01-22T21:33:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22281"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000415586/dsa-2026-049-security-update-for-dell-powerscale-onefs-multiple-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-WFJ9-288H-5MPM
Vulnerability from github – Published: 2023-01-11 09:30 – Updated: 2023-01-20 21:30A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.
{
"affected": [],
"aliases": [
"CVE-2021-46795"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-11T08:15:00Z",
"severity": "MODERATE"
},
"details": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.",
"id": "GHSA-wfj9-288h-5mpm",
"modified": "2023-01-20T21:30:33Z",
"published": "2023-01-11T09:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46795"
},
{
"type": "WEB",
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WFQX-GJRF-G28R
Vulnerability from github – Published: 2026-06-19 20:47 – Updated: 2026-06-19 20:47Summary
Crossplane allows package signature verification to be configured via the ImageConfig mechanism. When enabled, the package manager uses cosign to verify that packages are correctly signed before pulling and installing them.
When a package is installed using a tag reference (e.g., a semantic version), a malicious OCI registry could serve a correctly signed image for verification, then subsequently serve an unsigned image for installation. This is possible because Crossplane resolves the tag reference separately for each step.
This vulnerability is relevant only for users who do all three of the following:
- Configure signature verification for packages,
- Install packages using tag references rather than digests, and
- Install packages from registries they do not control.
Mitigation
Installing packages by image digest rather than using tags avoids this issue.
Fix
The package manager has been updated to resolve tag references once and use the resulting digest for both signature verification and image fetching. This ensures that Crossplane pulls the same content that had its signature verified. The fix has been applied to Crossplane's main branch and backported to the v2.3 and v2.2 release branches; it will be released in v2.3.3 and v2.2.3.
Credits
This issue was reported, independently, by @bugbunny-research and @tonghuaroot.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/crossplane/crossplane/v2"
},
"ranges": [
{
"events": [
{
"introduced": "2.3.0-rc.0"
},
{
"last_affected": "2.3.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/crossplane/crossplane/v2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.2.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/crossplane/crossplane"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.21.0-rc.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-345",
"CWE-367"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-19T20:47:55Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "## Summary\n\nCrossplane allows package signature verification to be configured via the `ImageConfig` mechanism. When enabled, the package manager uses cosign to verify that packages are correctly signed before pulling and installing them.\n\nWhen a package is installed using a tag reference (e.g., a semantic version), a malicious OCI registry could serve a correctly signed image for verification, then subsequently serve an unsigned image for installation. This is possible because Crossplane resolves the tag reference separately for each step.\n\nThis vulnerability is relevant only for users who do all three of the following:\n\n1. Configure signature verification for packages,\n2. Install packages using tag references rather than digests, and\n3. Install packages from registries they do not control.\n\n## Mitigation\n\nInstalling packages by image digest rather than using tags avoids this issue.\n\n## Fix\n\nThe package manager has been updated to resolve tag references once and use the resulting digest for both signature verification and image fetching. This ensures that Crossplane pulls the same content that had its signature verified. The fix has been applied to Crossplane\u0027s `main` branch and backported to the v2.3 and v2.2 release branches; it will be released in v2.3.3 and v2.2.3.\n\n## Credits\n\nThis issue was reported, independently, by @bugbunny-research and @tonghuaroot.",
"id": "GHSA-wfqx-gjrf-g28r",
"modified": "2026-06-19T20:47:55Z",
"published": "2026-06-19T20:47:55Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/crossplane/crossplane/security/advisories/GHSA-wfqx-gjrf-g28r"
},
{
"type": "PACKAGE",
"url": "https://github.com/crossplane/crossplane"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Crossplane: Signature verification TOCTOU allows installing unverified package content via mutable tag"
}
GHSA-WG86-4JF6-2J9W
Vulnerability from github – Published: 2025-03-03 12:30 – Updated: 2025-03-03 12:30Memory corruption may occur while processing message from frontend during allocation.
{
"affected": [],
"aliases": [
"CVE-2024-53028"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-03T11:15:14Z",
"severity": "HIGH"
},
"details": "Memory corruption may occur while processing message from frontend during allocation.",
"id": "GHSA-wg86-4jf6-2j9w",
"modified": "2025-03-03T12:30:33Z",
"published": "2025-03-03T12:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53028"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/march-2025-bulletin.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-WGRH-QRR7-QQ96
Vulnerability from github – Published: 2024-03-12 18:31 – Updated: 2024-03-12 18:31Windows Print Spooler Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-21433"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-12T17:15:52Z",
"severity": "HIGH"
},
"details": "Windows Print Spooler Elevation of Privilege Vulnerability",
"id": "GHSA-wgrh-qrr7-qq96",
"modified": "2024-03-12T18:31:13Z",
"published": "2024-03-12T18:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21433"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21433"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WJ55-88GF-X564
Vulnerability from github – Published: 2026-03-26 21:14 – Updated: 2026-04-15 20:55Summary
Queued node actions were not revalidated against current command policy when later delivered, so stale allowlists or declarations could survive policy tightening.
Affected Packages / Versions
- Package:
openclaw(npm) - Affected: < 2026.3.22
- Fixed: >= 2026.3.22
- Latest released tag checked:
v2026.3.23-2(630f1479c44f78484dfa21bb407cbe6f171dac87) - Latest published npm version checked:
2026.3.23-2
Fix Commit(s)
ec2c6d83b9f5f91d6d9094842e0f19b88e63e3e2
Release Status
The fix shipped in v2026.3.22 and remains present in v2026.3.23 and v2026.3.23-2.
Code-Level Confirmation
- src/gateway/server-methods/nodes.ts now revalidates queued actions against the current allowlist and declared command set at delivery time.
- src/gateway/server-methods/nodes.invoke-wake.test.ts includes the shipped stale-queue regression coverage.
OpenClaw thanks @zpbrent for reporting.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "openclaw"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.3.22"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-35648"
],
"database_specific": {
"cwe_ids": [
"CWE-367",
"CWE-863"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-26T21:14:24Z",
"nvd_published_at": "2026-04-10T17:17:05Z",
"severity": "LOW"
},
"details": "## Summary\nQueued node actions were not revalidated against current command policy when later delivered, so stale allowlists or declarations could survive policy tightening.\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Affected: \u003c 2026.3.22\n- Fixed: \u003e= 2026.3.22\n- Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`)\n- Latest published npm version checked: `2026.3.23-2`\n\n## Fix Commit(s)\n- `ec2c6d83b9f5f91d6d9094842e0f19b88e63e3e2`\n\n## Release Status\nThe fix shipped in `v2026.3.22` and remains present in `v2026.3.23` and `v2026.3.23-2`.\n\n## Code-Level Confirmation\n- src/gateway/server-methods/nodes.ts now revalidates queued actions against the current allowlist and declared command set at delivery time.\n- src/gateway/server-methods/nodes.invoke-wake.test.ts includes the shipped stale-queue regression coverage.\n\nOpenClaw thanks @zpbrent for reporting.",
"id": "GHSA-wj55-88gf-x564",
"modified": "2026-04-15T20:55:23Z",
"published": "2026-03-26T21:14:24Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-wj55-88gf-x564"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35648"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87"
},
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/commit/ec2c6d83b9f5f91d6d9094842e0f19b88e63e3e2"
},
{
"type": "PACKAGE",
"url": "https://github.com/openclaw/openclaw"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/openclaw-policy-bypass-via-unvalidated-queued-node-actions"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OpenClaw may have stale policy enforcement for queued node actions"
}
GHSA-WJF9-5G6M-RGCR
Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-10 18:31If a legitimate user confirms a self-update prompt or initiate an installation of a CODESYS Development System, a low privileged local attacker can gain elevated rights due to a TOCTOU vulnerability in the CODESYS installer.
{
"affected": [],
"aliases": [
"CVE-2026-2364"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T17:39:29Z",
"severity": "HIGH"
},
"details": "If a legitimate user confirms a self-update prompt or initiate an installation of a CODESYS Development System, a low privileged local attacker can gain elevated rights due to a TOCTOU vulnerability in the CODESYS installer.",
"id": "GHSA-wjf9-5g6m-rgcr",
"modified": "2026-03-10T18:31:17Z",
"published": "2026-03-10T18:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2364"
},
{
"type": "WEB",
"url": "https://certvde.com/de/advisories/VDE-2026-012"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WMGJ-HRX3-23GJ
Vulnerability from github – Published: 2026-03-29 15:30 – Updated: 2026-04-06 22:36Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-xf99-j42q-5w5p. This link is maintained to preserve external references.
Original Description
OpenClaw before 2026.3.11 contains an approval integrity vulnerability allowing attackers to execute rewritten local code by modifying scripts between approval and execution when exact file binding cannot occur. Remote attackers can change approved local scripts before execution to achieve unintended code execution as the OpenClaw runtime user.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "openclaw"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.3.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-06T22:36:11Z",
"nvd_published_at": "2026-03-29T13:17:02Z",
"severity": "HIGH"
},
"details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-xf99-j42q-5w5p. This link is maintained to preserve external references.\n\n### Original Description\nOpenClaw before 2026.3.11 contains an approval integrity vulnerability allowing attackers to execute rewritten local code by modifying scripts between approval and execution when exact file binding cannot occur. Remote attackers can change approved local scripts before execution to achieve unintended code execution as the OpenClaw runtime user.",
"id": "GHSA-wmgj-hrx3-23gj",
"modified": "2026-04-06T22:36:11Z",
"published": "2026-03-29T15:30:19Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-xf99-j42q-5w5p"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32979"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/openclaw-unbound-interpreter-and-runtime-commands-bypass-in-node-host-approval"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/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"
}
],
"summary": "Duplicate Advisory: OpenClaw: Unbound interpreter and runtime commands could bypass node-host approval integrity",
"withdrawn": "2026-04-06T22:36:11Z"
}
GHSA-WMH7-J79P-R4X9
Vulnerability from github – Published: 2023-12-19 00:30 – Updated: 2026-04-28 21:33Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Ricard Torres Thumbs Rating.This issue affects Thumbs Rating: from n/a through 5.0.0.
{
"affected": [],
"aliases": [
"CVE-2022-45809"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-19T00:15:07Z",
"severity": "MODERATE"
},
"details": "Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Ricard Torres Thumbs Rating.This issue affects Thumbs Rating: from n/a through 5.0.0.",
"id": "GHSA-wmh7-j79p-r4x9",
"modified": "2026-04-28T21:33:25Z",
"published": "2023-12-19T00:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45809"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/thumbs-rating/wordpress-thumbs-rating-plugin-4-1-0-race-condition-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-WMJQ-JRM2-9WFR
Vulnerability from github – Published: 2025-04-28 20:31 – Updated: 2025-04-29 13:10Issue
Snowflake discovered and remediated a vulnerability in the NodeJS Driver for Snowflake (“Driver”). When using the Easy Logging feature on Linux and macOS the Driver didn’t correctly verify the permissions of the logging configuration file, potentially allowing an attacker with local access to overwrite the configuration and gain control over logging level and output location.
This vulnerability affects Driver versions 1.10.0 through 2.0.3. Snowflake fixed the issue in version 2.0.4.
Vulnerability Details
When using the Easy Logging feature on Linux and macOS the Driver reads logging configuration from a user-provided file. On Linux and macOS the Driver verifies that the configuration file can be written to only by its owner. That check was vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition and failed to verify that the file owner matches the user running the Driver. This could allow a local attacker with write access to the configuration file or the directory containing it to overwrite the configuration and gain control over logging level and output location.
Solution
Snowflake released version 2.0.4 of the NodeJS Driver for Snowflake, which fixes this issue. We recommend users upgrade to version 2.0.4.
Additional Information
If you discover a security vulnerability in one of our products or websites, please report the issue to Snowflake through our Vulnerability Disclosure Program hosted at HackerOne. For more information, please see our Vulnerability Disclosure Policy.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.0.3"
},
"package": {
"ecosystem": "npm",
"name": "snowflake-sdk"
},
"ranges": [
{
"events": [
{
"introduced": "1.10.0"
},
{
"fixed": "2.0.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-46328"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": true,
"github_reviewed_at": "2025-04-28T20:31:03Z",
"nvd_published_at": "2025-04-28T23:15:44Z",
"severity": "LOW"
},
"details": "# Issue\nSnowflake discovered and remediated a vulnerability in the NodeJS Driver for Snowflake (\u201cDriver\u201d). When using the Easy Logging feature on Linux and macOS the Driver didn\u2019t correctly verify the permissions of the logging configuration file, potentially allowing an attacker with local access to overwrite the configuration and gain control over logging level and output location.\n\nThis vulnerability affects Driver versions 1.10.0 through 2.0.3. Snowflake fixed the issue in version 2.0.4.\n\n# Vulnerability Details\nWhen using the Easy Logging feature on Linux and macOS the Driver reads logging configuration from a user-provided file. On Linux and macOS the Driver verifies that the configuration file can be written to only by its owner. That check was vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition and failed to verify that the file owner matches the user running the Driver. This could allow a local attacker with write access to the configuration file or the directory containing it to overwrite the configuration and gain control over logging level and output location.\n\n# Solution\nSnowflake released version 2.0.4 of the NodeJS Driver for Snowflake, which fixes this issue. We recommend users upgrade to version 2.0.4.\n\n# Additional Information\nIf you discover a security vulnerability in one of our products or websites, please report the issue to Snowflake through our Vulnerability Disclosure Program hosted at HackerOne. For more information, please see our [Vulnerability Disclosure Policy](https://hackerone.com/snowflake?type=team).",
"id": "GHSA-wmjq-jrm2-9wfr",
"modified": "2025-04-29T13:10:46Z",
"published": "2025-04-28T20:31:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/snowflakedb/snowflake-connector-nodejs/security/advisories/GHSA-wmjq-jrm2-9wfr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-46328"
},
{
"type": "WEB",
"url": "https://github.com/snowflakedb/snowflake-connector-nodejs/commit/e94c24112271e1f44c271634bf29a3188acc68d0"
},
{
"type": "PACKAGE",
"url": "https://github.com/snowflakedb/snowflake-connector-nodejs"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "NodeJS Driver for Snowflake has race condition when checking access to Easy Logging configuration file"
}
Mitigation
The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
Mitigation
When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
Mitigation
Limit the interleaving of operations on files from multiple processes.
Mitigation
If you cannot perform operations atomically and you must share access to the resource between multiple processes or threads, then try to limit the amount of time (CPU cycles) between the check and use of the resource. This will not fix the problem, but it could make it more difficult for an attack to succeed.
Mitigation
Recheck the resource after the use call to verify that the action was taken appropriately.
Mitigation
Ensure that some environmental locking mechanism can be used to protect resources effectively.
Mitigation
Ensure that locking occurs before the check, as opposed to afterwards, such that the resource, as checked, is the same as it is when in use.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.