6.6

CVE-2024-47887: Action Controller has possible ReDoS vulnerability in HTTP Token authentication

Deferred
AliasesUBUNTU-CVE-2024-47887DEBIAN-CVE-2024-47887GHSA-vfg9-r3fq-jvx4
Published 16-10-2024Last modified 17-10-2024

Vulnerability summary

CVE-2024-47887 is a medium (CVSS 6.6) vulnerability in rails. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 64% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.6, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.6/10
010
Medium · v4.0 (CVE.org)
EPSS score
1.04%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 6
DLA-4383-1DSA-5881-1OPENSUSE-SU-2024:14472-1OPENSUSE-SU-2024:14479-1OPENSUSE-SU-2025:15110-1OPENSUSE-SU-2025:15124-1

Timeline

  1. 16-10-2024
    PublishedVulnerability first disclosed.
  2. 17-10-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.04% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • rails< 2:6.1.7.10+dfsg-1~deb12u1 | < 2:7.2.2.1+dfsg-1
Rails1 product
  • rails≥ 4.0.0, < 6.1.7.9 | ≥ 7.0.0, < 7.0.8.5 | ≥ 7.1.0, < 7.1.4.1 | ≥ 7.2.0, < 7.2.1.1
RubyGems1 product
  • actionpack≥ 4.0.0, < 6.1.7.9 | ≥ 7.0.0, < 7.0.8.5 | ≥ 7.1.0, < 7.1.4.1 | ≥ 7.2.0, < 7.2.1.1
Ubuntu1 product
  • rails< 2:4.2.6-1ubuntu0.1~esm1 | < 2:4.2.10-0ubuntu4+esm1 | < 2:5.2.3+dfsg-3ubuntu0.1~esm1 | < 2:6.1.4.1+dfsg-8ubuntu2+esm1 | All versions (No fix recorded)

4 vendors · 4 products

References

11 links
Show all 11 references