Cloudanix VulnDB

CVE-2024-38479

None

CVSS

—

EPSS

0.8%

Published

Nov 14, 2024

CISA due date

—

Cloudanix analysis

Schedule a fix SSVC: Track

A flaw in the way certain web traffic handling software checks incoming data could let attackers slip past protections or slow down services until the software is updated.

Exploitation
Remote Unauthenticated
Attacker needs
None
Complexity
Low
Impact
Other
Component
Network Service
Class
Improper Input Validation
Remediation
Upgrade
Effort
Medium
Patch risk
Low

What it actually does

Improper input validation allows crafted requests to bypass intended checks in the proxy handling logic, potentially leading to unexpected request processing or resource exhaustion.

Why it matters to the business

Organizations running affected proxy servers face elevated risk of service disruption or security control bypasses until upgraded, with urgency driven by the broad installed base of Apache Traffic Server deployments.

How an attack unfolds

An attacker identifies an exposed Apache Traffic Server instance and sends a sequence of malformed HTTP requests that exploit the missing validation to trigger unintended behavior in request routing or caching.

How to fix it

Upgrade Apache Traffic Server to version 9.2.6 or 10.0.2. Apply the exact fixed commits referenced for the GIT package where applicable and restart affected services.

How to confirm the fix worked

Query the running version string via the traffic_server binary or admin interface and confirm it matches or exceeds 9.2.6; review changelog entries for the input validation fixes.

Typical attack path

  1. Scan for publicly reachable Apache Traffic Server instances on standard proxy ports
  2. Craft and send HTTP requests containing invalid headers or malformed payloads
  3. Observe response anomalies or side effects that confirm bypass of input checks
  4. Leverage the condition to chain into further attacks such as cache poisoning or denial of service

How to detect it

Review proxy access logs for unusual request patterns with invalid headers or malformed URIs around the time of any anomalous behavior; correlate with process crashes or elevated resource usage on the Traffic Server hosts.

What your security team should do

  • Prioritize upgrade of all instances in the 8.x and 9.x branches to the fixed releases within the next maintenance window
  • Add version checks for Apache Traffic Server to routine vulnerability scanning pipelines
  • Monitor upstream announcements for any follow-on advisories related to this validation issue

The record

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.5. Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have the issue.

Affected packages

Ecosystem Package Introduced Fixed
Debian:11 trafficserver 0 No fix
Debian:11 trafficserver 0 8.1.11+ds-0+deb11u2
Debian:12 trafficserver 0 No fix
Debian:12 trafficserver 0 9.2.5+ds-0+deb12u2
Ubuntu:16.04:LTS trafficserver 0 No fix
Ubuntu:18.04:LTS trafficserver 0 No fix
Ubuntu:20.04:LTS trafficserver 0 No fix
Ubuntu:22.04:LTS trafficserver 0 No fix
Ubuntu:24.04:LTS trafficserver 0 No fix
Ubuntu:24.10 trafficserver 0 No fix
Ubuntu:25.04 trafficserver 0 No fix
Ubuntu:25.10 trafficserver 0 No fix
Ubuntu:Pro:16.04:LTS trafficserver 0 No fix
Ubuntu:Pro:18.04:LTS trafficserver 0 No fix
Ubuntu:Pro:20.04:LTS trafficserver 0 No fix
Ubuntu:Pro:22.04:LTS trafficserver 0 No fix

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