CVE-2021-43808

Published on: Not Yet Published

Last Modified on: 12/08/2021 05:05:00 PM UTC

CVE-2021-43808 - advisory for GHSA-66hf-2p6w-jqfw

Source: Mitre Source: Nist Print: PDF PDF
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Certain versions of Framework from Laravel contain the following vulnerability:

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.

  • CVE-2021-43808 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo laravel - framework version >= 8.0.0, < 8.75.0
  • Affected Vendor/Software: URL Logo laravel - framework version >= 7.0.0, < 7.30.6
  • Affected Vendor/Software: URL Logo laravel - framework version < 6.20.42

CVSS3 Score: 6.1 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE REQUIRED
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
CHANGED LOW LOW NONE

CVSS2 Score: 4.3 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE PARTIAL NONE

CVE References

Description Tags Link
[6.x] Fix parent call (#39908) · laravel/[email protected] · GitHub github.com
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URL Logo MISC github.com/laravel/framework/commit/b8174169b1807f36de1837751599e2828ceddb9b
Release v8.75.0 · laravel/framework · GitHub github.com
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URL Logo MISC github.com/laravel/framework/releases/tag/v8.75.0
[6.x] Fix parent call by driesvints · Pull Request #39908 · laravel/framework · GitHub github.com
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URL Logo MISC github.com/laravel/framework/pull/39908
[7.x] Fix parent call by GrahamCampbell · Pull Request #39909 · laravel/framework · GitHub github.com
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URL Logo MISC github.com/laravel/framework/pull/39909
Blade `@parent` Exploitation Leading To Possible XSS · Advisory · laravel/framework · GitHub github.com
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URL Logo CONFIRM github.com/laravel/framework/security/advisories/GHSA-66hf-2p6w-jqfw
Release v7.30.6 · laravel/framework · GitHub github.com
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URL Logo MISC github.com/laravel/framework/releases/tag/v7.30.6
Release v6.20.42 · laravel/framework · GitHub github.com
text/html
URL Logo MISC github.com/laravel/framework/releases/tag/v6.20.42
Parent replacement fix by taylorotwell · Pull Request #39906 · laravel/framework · GitHub github.com
text/html
URL Logo MISC github.com/laravel/framework/pull/39906

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationLaravelFrameworkAllAllAllAll
  • cpe:2.3:a:laravel:framework:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-43808 : Laravel is a web application framework. Laravel prior to versions 8.75.0, 7.30.6, and 6.20.42 cont… twitter.com/i/web/status/1… 2021-12-07 22:22:05
Reddit Logo Icon /r/netcve CVE-2021-43808 2021-12-07 23:38:47
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