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TraefikApplication

CVE-2024-28869

HIGH · 7.5 CVSS v3.1 Published 2024-04-12
Fix available
A fix is available. Upgrade to 2.11.2 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Traefik is an HTTP reverse proxy and load balancer. In affected versions sending a GET request to any Traefik endpoint with the "Content-length" request header results in an indefinite hang with the default configuration. This vulnerability can be exploited by attackers to induce a denial of service. This vulnerability has been addressed in version 2.11.2 and 3.0.0-rc5. Users are advised to upgrade. For affected versions, this vulnerability can be mitigated by configuring the readTimeout option.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
TraefikApplication
Affected:< 2.11.2= 3.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.11.2 or later
Fixed in 2.11.2
Vendor patch github.com →
Recommended fix High confidence

2.11.2 (stable) or 3.0.0-rc5

  1. 1. Identify your current Traefik version using 'traefik version' or checking your deployment
  2. 2. For production environments: upgrade to Traefik version 2.11.2
  3. 3. For testing/development with v3: upgrade to version 3.0.0-rc5
  4. 4. Back up your current Traefik configuration and static config file before upgrading
  5. 5. Perform the upgrade using your package manager or container image (e.g., docker pull traefik:v2.11.2)
  6. 6. Restart Traefik service after upgrade
  7. 7. Verify the fix by sending a GET request with Content-Length header to confirm it no longer hangs
  8. 8. As an alternative mitigation for unpatched versions: configure 'readTimeout' in your static configuration to limit request processing time
Caveat Version 3.0.0 is a major version change with potential breaking changes from v2; version 2.11.2 is a patch upgrade within the v2 line with minimal risk

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-28869 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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