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Vulnerability · Published Oct 16, 2024 · Assigned by GitHub_M

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

Medium 6.6

In plain English

A medium-severity regular-expression denial of service in rails from rails. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.6Medium
Exploit odds (30 days)1.0%top 35.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rails2:6.1.7.10+dfsg-1~deb12u1DEBIAN-CVE-2024-47887
Debian:12rails2:6.1.7.10+dfsg-1~deb12u1DSA-5881-1
Debian:13rails2:7.2.2.1+dfsg-1DEBIAN-CVE-2024-47887
Debian:14rails2:7.2.2.1+dfsg-1DEBIAN-CVE-2024-47887
RubyGemsactionpack6.1.7.9GHSA-vfg9-r3fq-jvx4
RubyGemsactionpack7.0.8.5GHSA-vfg9-r3fq-jvx4
RubyGemsactionpack7.1.4.1GHSA-vfg9-r3fq-jvx4
RubyGemsactionpack7.2.1.1GHSA-vfg9-r3fq-jvx4
Ubuntu:24.04:LTSrailsno fix listedUBUNTU-CVE-2024-47887
Ubuntu:25.10railsno fix listedUBUNTU-CVE-2024-47887
Ubuntu:26.04:LTSrailsno fix listedUBUNTU-CVE-2024-47887
Ubuntu:26.10railsno fix listedUBUNTU-CVE-2024-47887

Affected products (as reported)

VendorProductVersions
rails 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

Weakness: CWE-1333 · Vector: 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

References