CVE-2021-43808
Description
Laravel is a web application framework. Laravel prior to versions 8.75.0, 7.30.6, and 6.20.42 contain a possible cross-site scripting (XSS) vulnerability in the Blade templating engine. A broken HTML element may be clicked and the user taken to another location in their browser due to XSS. This is due to the user being able to guess the parent placeholder SHA-1 hash by trying common names of sections. If the parent template contains an exploitable HTML structure an XSS vulnerability can be exposed. This vulnerability has been patched in versions 8.75.0, 7.30.6, and 6.20.42 by determining the parent placeholder at runtime and using a random hash that is unique to each request.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
laravel/frameworkPackagist | < 6.20.42 | 6.20.42 |
laravel/frameworkPackagist | >= 7.0.0, < 7.30.6 | 7.30.6 |
laravel/frameworkPackagist | >= 8.0.0, < 8.75.0 | 8.75.0 |
illuminate/viewPackagist | < 6.20.42 | 6.20.42 |
illuminate/viewPackagist | >= 7.0.0, < 7.30.6 | 7.30.6 |
illuminate/viewPackagist | >= 8.0.0, < 8.75.0 | 8.75.0 |
Affected products
4- ghsa-coords2 versions
< 6.20.42+ 1 more
- (no CPE)range: < 6.20.42
- (no CPE)range: < 6.20.42
Patches
Vulnerability mechanics
References
12- github.com/laravel/framework/commit/b8174169b1807f36de1837751599e2828ceddb9bnvdPatchThird Party AdvisoryWEB
- github.com/laravel/framework/pull/39906nvdPatchThird Party AdvisoryWEB
- github.com/laravel/framework/pull/39908nvdPatchThird Party AdvisoryWEB
- github.com/laravel/framework/pull/39909nvdPatchThird Party AdvisoryWEB
- github.com/laravel/framework/security/advisories/GHSA-66hf-2p6w-jqfwnvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-66hf-2p6w-jqfwghsaADVISORY
- github.com/laravel/framework/releases/tag/v6.20.42nvdRelease NotesThird Party AdvisoryWEB
- github.com/laravel/framework/releases/tag/v7.30.6nvdRelease NotesThird Party AdvisoryWEB
- github.com/laravel/framework/releases/tag/v8.75.0nvdRelease NotesThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-43808ghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/illuminate/view/CVE-2021-43808.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/laravel/framework/CVE-2021-43808.yamlghsaWEB
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