CVE-2021-44528
First published: Tue Dec 14 2021(Updated: )
A open redirect vulnerability exists in Action Pack >= 6.0.0 that could allow an attacker to craft a "X-Forwarded-Host" headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website.
Credit: support@hackerone.com support@hackerone.com support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/actionpack | >=6.1.0<=6.1.4.1 | 6.1.4.2 |
| rubygems/actionpack | >=6.0.0<=6.0.4.1 | 6.0.4.2 |
| debian/rails | 2:5.2.2.1+dfsg-1+deb10u3 2:5.2.2.1+dfsg-1+deb10u5 2:6.0.3.7+dfsg-2+deb11u2 2:6.1.7.3+dfsg-1 2:6.1.7.3+dfsg-2 | |
| debian/rails | <=2:6.1.4.1+dfsg-8<=2:6.0.3.7+dfsg-2 | |
| Rubyonrails Rails | =6.0.4.2 | |
| Rubyonrails Rails | =6.1.4.2 | |
| Rubyonrails Rails | =7.0.0-rc2 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-44528
- https://groups.google.com/g/ruby-security-ann/c/vG9gz3nk1pM/m/7-NU4MNrDAAJ?utm_medium=email&utm_source=footer
- https://github.com/rails/rails/commit/aecba3c301b80e9d5a63c30ea1b287bceaf2c107
- https://github.com/rails/rails/blob/v6.1.4.2/actionpack/CHANGELOG.md#rails-6142-december-14-2021
- https://github.com/rails/rails/commit/0fccfb9a3097a9c4260c791f1a40b128517e7815
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2021-44528.yml
- https://groups.google.com/g/ruby-security-ann/c/vG9gz3nk1pM/m/7-NU4MNrDAAJ
- https://www.debian.org/security/2023/dsa-5372
- https://github.com/advisories/GHSA-qphc-hf5q-v8fc (Advisory)
- https://www.openwall.com/lists/oss-security/2021/12/14/5
- https://github.com/rails/rails/commit/fd6a64fef1d0f7f40a8d4b046da882e83163299c
- https://github.com/rails/rails/commit/07ec8062e605ba4e9bd153e1d264b02ac4ab8a0f
- https://security-tracker.debian.org/tracker/CVE-2021-44528
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44528
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001817
- https://security.netapp.com/advisory/ntap-20240208-0003/
Frequently Asked Questions
What is CVE-2021-44528?
CVE-2021-44528 is an open redirect vulnerability in Action Pack, a component of Ruby on Rails.
How does CVE-2021-44528 work?
CVE-2021-44528 can be exploited by an attacker using specially crafted "X-Forwarded-Host" headers in combination with certain "allowed host" formats to redirect users to a malicious website.
Which applications are impacted by CVE-2021-44528?
Applications using Action Pack versions between 6.0.0 and 6.0.4.1 or between 6.1.0 and 6.1.4.1 may be impacted by CVE-2021-44528.
How severe is CVE-2021-44528?
CVE-2021-44528 has a severity rating of 6.1 (High).
What is the remedy for CVE-2021-44528?
To mitigate CVE-2021-44528, upgrade to version 6.0.4.2 or 6.1.4.2 of Action Pack, which contain the necessary fixes.
- collector/security-tracker-debian
- collector/debian-bugs
- alias/CVE-2021-44528
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- package-manager/debian
- vendor/rubyonrails
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- version/rubyonrails rails/6.0.4.2
- version/rubyonrails rails/6.1.4.2
- version/rubyonrails rails/7.0.0-rc2
- package-manager/rubygems