CVE-2020-8264: XSS
First published: Wed Jan 06 2021(Updated: )
In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allowing an attacker to send or embed (in another page) a specially crafted URL which can allow the attacker to execute JavaScript in the context of the local application. This vulnerability is in the Actionable Exceptions middleware.
Credit: support@hackerone.com support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/actionpack | >=6.0.0<=6.0.3.3 | 6.0.3.4 |
| Rubyonrails Rails | >=6.0.0<6.0.3.4 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-8264
- https://hackerone.com/reports/904059
- https://groups.google.com/g/rubyonrails-security/c/yQzUVfv42jk/m/oJWw-xhNAQAJ
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2020-8264.yml
- https://groups.google.com/g/rubyonrails-security/c/yQzUVfv42jk
- https://github.com/advisories/GHSA-35mm-cc6r-8fjp (Advisory)
Frequently Asked Questions
What is the severity of CVE-2020-8264?
The severity of CVE-2020-8264 is medium with a CVSS score of 6.1.
How does CVE-2020-8264 impact the actionpack gem?
CVE-2020-8264 affects the actionpack gem versions 6.0.0 to 6.0.3.3, allowing a possible XSS vulnerability in development mode.
How can an attacker exploit CVE-2020-8264?
An attacker can exploit CVE-2020-8264 by sending or embedding a specially crafted URL in another page, allowing them to execute JavaScript in the context of the local application.
What is the recommended remedy for CVE-2020-8264?
To remediate CVE-2020-8264, it is recommended to upgrade the actionpack gem to version 6.0.3.4 or higher.
Is Rubyonrails Rails affected by CVE-2020-8264?
Yes, Rubyonrails Rails versions 6.0.0 to 6.0.3.3 are also affected by CVE-2020-8264.
- collector/github-advisory-latest
- alias/GHSA-35mm-cc6r-8fjp
- alias/CVE-2020-8264
- collector/github-advisory
- collector/nvd-index
- collector/nvd-cve
- agent/references
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- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
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- agent/last-modified-date
- agent/first-publish-date
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- package-manager/rubygems
- vendor/rubyonrails
- canonical/rubyonrails rails
- version/rubyonrails rails/6.0.0