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CVE-2024-35161

Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggling

Published: Jul 26, 2024Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-444
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.0%
Top 42.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-444

Affected Products

Apache Traffic ServerApache Software Foundation
On-premNetwork Device
Networking Infrastructure / load-balancer-proxy
Traffic ServerApache Software Foundation
On-premWeb App
Web & CMS Plugins / cms-core
traffic serverapache
On-premWeb App
Web & CMS Plugins
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0
lists.apache.org
https://www.openwall.com/lists/oss-security/2024/07/25/1
openwall.com
https://vuldb.com/?id.272443
vuldb.com
and 4 more references View all →

Timeline

Published
Jul 26, 2024
Last Updated
Nov 3, 2025

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