GHSA-xj5v-6v4g-jfw6 CVE-2024-26141
Rack has possible DoS Vulnerability with Range Header
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 1.61%
- Chance of exploitation in the next 30 days. Higher than 75.97% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-400 Uncontrolled Resource Consumption
- Fix
3.0.9.1- Upgrade rack to this version or later
Description
Possible DoS Vulnerability with Range Header in Rack
There is a possible DoS vulnerability relating to the Range request header in Rack. This vulnerability has been assigned the CVE identifier CVE-2024-26141.
Versions Affected: >= 1.3.0. Not affected: < 1.3.0 Fixed Versions: 3.0.9.1, 2.2.8.1
Impact
Carefully crafted Range headers can cause a server to respond with an unexpectedly large response. Responding with such large responses could lead to a denial of service issue.
Vulnerable applications will use the Rack::File middleware or the
Rack::Utils.byte_ranges methods (this includes Rails applications).
Releases
The fixed releases are available at the normal locations.
Workarounds
There are no feasible workarounds for this issue.
Patches
To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.
- 3-0-range.patch - Patch for 3.0 series
- 2-2-range.patch - Patch for 2.2 series
Credits
Thank you ooooooo_q for the report and patch
Affected versions
RubyGems
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
rack RubyGems → 3.0.9.1
- bundler
bundle update rack # Gemfile: gem "rack", ">= 3.0.9.1"
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Weakness
CWE-400: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How to prevent it
- Architecture and Design: Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
- Architecture and Design: Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed. The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question. The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
- Architecture and Design: Ensure that protocols have specific limits of scale placed on them.
- Implementation: Ensure that all failures in resource allocation place the system into a safe posture.
References
Advisories
Packages
Other links
- github.com/rack/rack/security/advisories/GHSA-xj5v-6v4g-jfw6
- github.com/rack/rack/commit/4849132bef471adb21131980df745f4bb84de2d9
- github.com/rack/rack/commit/62457686b26d33a15a254c7768c2076e8e02b48b
- discuss.rubyonrails.org/t/possible-dos-vulnerability-with-range-header-in-rack/84944
- github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26141.yml
- lists.debian.org/debian-lts-announce/2024/04/msg00022.html
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-g2pf-xv49-m2h5 Rack::Request accepts invalid Host characters, enabling host allowlist bypass | Medium | Also affects rack |
| GHSA-v6x5-cg8r-vv6x Rack's multipart header parsing allows Denial of Service via escape-heavy quoted parameters | High | Also affects rack |
| GHSA-qfgr-crr9-7r49 Rack: Forwarded Header semicolon injection enables Host and Scheme spoofing | Medium | Also affects rack |
| GHSA-rx22-g9mx-qrhv Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values | Medium | Also affects rack |
| GHSA-q2ww-5357-x388 Rack has Content-Length mismatch in Rack::Files error responses | Medium | Also affects rack |
| GHSA-qv7j-4883-hwh7 Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect | High | Also affects rack |
| GHSA-8vqr-qjwx-82mw Rack's multipart parsing without Content-Length header allows unbounded chunked file uploads | High | Also affects rack |
| GHSA-x8cg-fq8g-mxfx Rack's multipart byte range processing allows denial of service via excessive overlapping ranges | High | Also affects rack |
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