CVE-2024-47887
Action Controller has possible ReDoS vulnerability in HTTP Token authentication
Description
Action Pack is a framework for handling and responding to web requests. Starting in version 4.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in Action Controller's HTTP Token authentication. For applications using HTTP Token authentication via `authenticate_or_request_with_http_token` or similar, a carefully crafted header may cause header parsing to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. One may choose to use Ruby 3.2 as a workaround.Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 depends on Ruby 3.2 or greater so is unaffected.
How to fix CVE-2024-47887
To remediate CVE-2024-47887, upgrade the affected package to a fixed version below.
- —upgrade to 6.1.8 or later
- —upgrade to 2:6.0.3.7+dfsg-2+deb11u3 or later
- —upgrade to 6.1.7.9 or later
Is CVE-2024-47887 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 4.0.0, < 6.1.8, >= 7.0.0, < 7.0.9, >= 7.1.0, < 7.1.5, >= 7.2.0, < 7.2.2
- from 0, < 2:6.0.3.7+dfsg-2+deb11u3
- >= 4.0.0, < 6.1.7.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U |