Apache Traffic Server 8.x < 8.1.3 / 9.x < 9.1.1 Multiple Vulnerabilities

critical Nessus Plugin ID 184807


The remote web server is affected by multiple vulnerabilities.


According to its self reported version, the remote Apache Traffic Server install is affected by multiple vulnerabilities.

- Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the stats-over-http plugin of Apache Traffic Server allows an attacker to overwrite memory. This issue affects Apache Traffic Server 9.1.0.

- Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections. (CVE-2021-41585)

Note that Nessus did not actually test for these issues, but instead has relied on the version found in the server's banner.


Upgrade to Apache Traffic Server version 8.1.3, 9.1.1 or later.

See Also


Plugin Details

Severity: Critical

ID: 184807

File Name: apache_ats_9_1_1.nasl

Version: 1.1

Type: remote

Family: Web Servers

Published: 11/7/2023

Updated: 11/8/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-43082


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:traffic_server

Required KB Items: installed_sw/Apache Traffic Server

Exploit Ease: No known exploits are available

Patch Publication Date: 11/2/2021

Vulnerability Publication Date: 11/2/2021

Reference Information

CVE: CVE-2021-37147, CVE-2021-37148, CVE-2021-37149, CVE-2021-41585, CVE-2021-43082