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Security Advisories: GSA_kwCzR0hTQS1taDJ4LWZjcWgtZm1xds4ABBvF
@sveltejs/kit has unescaped error message included on error page
Summary
The static error.html template for errors contains placeholders that are replaced without escaping the content first.
Details
From https://kit.svelte.dev/docs/errors:
error.html is the page that is rendered when everything else fails. It can contain the following placeholders:
%sveltekit.status% — the HTTP status
%sveltekit.error.message% — the error message
This leads to possible injection if an app explicitly creates an error with a message that contains user controlled content that ends up being something like this inside a server handle function:
error(500, '<script>alert("boom")</script>');
Uncaught errors cannot be exploited like this, as they always render the message "Internal error".
Escaping the message string in the function that creates the html output can be done to improve safety for applications that are using custom errors on the server.
PoC
None provided
Impact
Only applications where user provided input is used in the Error
message will be vulnerable, so the vast majority of applications will not be vulnerable
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1taDJ4LWZjcWgtZm1xds4ABBvF
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: about 1 month ago
Updated: about 1 month ago
CVSS Score: 4.2
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS Percentage: 0.00045
EPSS Percentile: 0.1735
Identifiers: GHSA-mh2x-fcqh-fmqv, CVE-2024-53262
References:
- https://github.com/sveltejs/kit/security/advisories/GHSA-mh2x-fcqh-fmqv
- https://github.com/sveltejs/kit/pull/13050
- https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%402.8.3
- https://nvd.nist.gov/vuln/detail/CVE-2024-53262
- https://github.com/sveltejs/kit/commit/134e36343ef57ed7e6e2b3bb9e7f05ad37865794
- https://kit.svelte.dev/docs/errors
- https://github.com/advisories/GHSA-mh2x-fcqh-fmqv
Blast Radius: 17.9
Affected Packages
npm:@sveltejs/kit
Dependent packages: 3,630Dependent repositories: 17,842
Downloads: 1,652,997 last month
Affected Version Ranges: < 2.8.3
Fixed in: 2.8.3
All affected versions: 0.0.8, 0.0.9, 0.0.10, 0.0.11, 0.0.12, 0.0.13, 0.0.14, 0.0.15, 0.0.16, 0.0.17, 0.0.18, 0.0.19, 0.0.21, 0.0.22, 0.0.23, 0.0.24, 0.0.25, 0.0.26, 0.0.27, 0.0.29, 0.0.30, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9, 1.0.10, 1.0.11, 1.0.12, 1.0.13, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.2.8, 1.2.9, 1.2.10, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.3.10, 1.4.0, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.5, 1.5.6, 1.5.7, 1.6.0, 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.10.0, 1.11.0, 1.12.0, 1.13.0, 1.14.0, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.15.4, 1.15.5, 1.15.6, 1.15.7, 1.15.8, 1.15.9, 1.15.10, 1.15.11, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.17.0, 1.17.1, 1.18.0, 1.19.0, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.21.0, 1.22.0, 1.22.1, 1.22.2, 1.22.3, 1.22.4, 1.22.5, 1.22.6, 1.23.0, 1.23.1, 1.24.0, 1.24.1, 1.25.0, 1.25.1, 1.25.2, 1.26.0, 1.27.0, 1.27.1, 1.27.2, 1.27.3, 1.27.4, 1.27.5, 1.27.6, 1.27.7, 1.28.0, 1.29.0, 1.29.1, 1.30.0, 1.30.1, 1.30.2, 1.30.3, 1.30.4, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.5.6, 2.5.7, 2.5.8, 2.5.9, 2.5.10, 2.5.11, 2.5.12, 2.5.13, 2.5.14, 2.5.15, 2.5.16, 2.5.17, 2.5.18, 2.5.19, 2.5.20, 2.5.21, 2.5.22, 2.5.23, 2.5.24, 2.5.25, 2.5.26, 2.5.27, 2.5.28, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.7.7, 2.8.0, 2.8.1, 2.8.2
All unaffected versions: 2.8.3, 2.8.4, 2.8.5, 2.9.0, 2.9.1, 2.10.0, 2.10.1, 2.11.0, 2.11.1, 2.12.0, 2.12.1, 2.12.2, 2.13.0, 2.14.0, 2.14.1, 2.15.0