CVE-2024-35161: Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggling

Published Jul 26, 2024
·
Updated

Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4.

Users can set a new setting (proxy.config.http.dropchunkedtrailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

Affected Software

4 affected componentsFixes available
Apache Traffic Server>=8.0.0<8.1.11
Apache Traffic Server>=9.0.0<9.2.5
debian/trafficserver<9.2.5+ds-0+deb12u1
9.2.5+ds-0+deb12u1
debian/trafficserver
9.2.5+ds-0+deb12u4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/trafficserver to a version that resolves this vulnerability.

    Fixed in 9.2.5+ds-0+deb12u1
  2. Upgrade

    Upgrade debian/trafficserver to a version that resolves this vulnerability.

    Fixed in 9.2.5+ds-0+deb12u4
  3. Upgrade

    Upgrade Apache Traffic Server to a version that resolves this vulnerability.

    Fixed in 8.1.11
  4. Upgrade

    Upgrade Apache Traffic Server to a version that resolves this vulnerability.

    Fixed in 9.2.5
  5. Configuration

    Enable proxy.config.http.drop_chunked_trailers so chunked trailer sections are not forwarded to origin servers

    Apache Traffic Server proxy.config.http.drop_chunked_trailers = true

Event History

Jul 26, 2024
CVE Published
via MITRE·09:10 AM
Data Sourced
via MITRE·09:10 AM
DescriptionWeakness
Data Sourced
via NVD·10:15 AM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·10:15 AM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2024-35161?

CVE-2024-35161 has a medium severity rating due to its potential for request smuggling and cache poisoning.

2

How do I fix CVE-2024-35161?

To fix CVE-2024-35161, upgrade Apache Traffic Server to version 8.1.11 or higher, or 9.2.5 or higher.

3

What versions are affected by CVE-2024-35161?

CVE-2024-35161 affects Apache Traffic Server versions from 8.0.0 to 8.1.10 and from 9.0.0 to 9.2.4.

4

Can CVE-2024-35161 lead to data leakage?

Yes, if exploited, CVE-2024-35161 could potentially allow attackers to smuggle requests leading to unauthorized data access.

5

What are the potential impacts of CVE-2024-35161?

The potential impacts of CVE-2024-35161 include request smuggling and cache poisoning, which can disrupt service and compromise data integrity.

Company

Resources

Contact

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