GitHub Advisoryadvisory · RubyGems
GHSA-cr5q-6q9f-rq6q Active Support Possibly Discloses Locally Encrypted Files
MEDIUM
Official page ↗
- Aliases
- CVE-2023-38037
- Ecosystem
- RubyGems
- Packages
- activesupport
- Severity
- Moderate
- CVSS vector
- CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
- Weaknesses
- CWE-377, CWE-732
- Reviewed
- 2023-08-23
Affected packages
• RubyGems activesupport: >= 5.2.0, < 6.1.7.5 → fixed in 6.1.7.5
• RubyGems activesupport: >= 7.0.0, < 7.0.7.1 → fixed in 7.0.7.1
Description
There is a possible file disclosure of locally encrypted files in Active Support. This vulnerability has been assigned the CVE identifier CVE-2023-38037.
Versions Affected: >= 5.2.0 Not affected: < 5.2.0 Fixed Versions: 7.0.7.1, 6.1.7.5
Impact
ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. The temporary file’s permissions are defaulted to the user’s current umask settings, meaning that it’s possible for other users on the same system to read the contents of the temporary file.
Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it.
All users running an affected release should either upgrade or use one of the workarounds immediately.
Releases
The fixed releases are available at the normal locations.
Workarounds
To work around this issue, you can set your umask to be more restrictive like this:
```ruby
$ umask 0077
```
Related
Weakness · not in database (1)
Alias · CVE (1)
- CVE-2023-38037 ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. vulnerability
Weakness · CWE (1)
- CWE-732 Incorrect Permission Assignment for Critical Resource weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-38037 advisory
- https://github.com/rails/rails/commit/a21d6edf35a60383dfa6c4da49e4b1aef5f00731 web
- https://discuss.rubyonrails.org/t/cve-2023-38037-possible-file-disclosure-of-locally-encrypted-files/83544 web
- https://github.com/rails/rails package
- https://github.com/rails/rails/releases/tag/v7.0.7.1 web
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2023-38037.yml web
- https://security.netapp.com/advisory/ntap-20250214-0010 web