CVE-2018-8004

Description

There are multiple HTTP smuggling and cache poisoning issues when clients making malicious requests interact with Apache Traffic Server (ATS). This affects versions 6.0.0 to 6.2.2 and 7.0.0 to 7.1.3. To resolve this issue users running 6.x should upgrade to 6.2.3 or later versions and 7.x users should upgrade to 7.1.4 or later versions.

Affected products

Vendor	Product	Affected	Fixed
Apache Software Foundation	Apache Traffic Server	6.0.0 to 6.2.2, 7.0.0 to 7.1.3	—

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 12	trafficserver	7.1.4+ds-1	—
Debian 9	trafficserver	7.0.0-6+deb9u2	DSA-4282-1

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 18.04 LTS	trafficserver	No fix yet	—
Ubuntu 16.04 LTS	trafficserver	No fix yet	—

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

mosesrenegade/CVE-2018-8004 ★ 1 · Aug 29, 2020

CVE Repository for HTTP DeSynchronization Attacks

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

DSA-4282-1 trafficserver - security update Debian Security (DSA / DLA) · Mar 9, 2026

There are multiple HTTP smuggling and cache poisoning issues when clients making malicious requests interact with Apache Traffic Server (AT…