Denial of service in Apache Traffic Server

1) Resource management error

EUVDB-ID: #VU27375

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-9481

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the affected software is vulnerable to a HTTP/2 slow read attack. A remote attacker can send HTTP requests in pieces slowly, one at a time to a Web server and cause a denial of service condtion on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Traffic Server: 6.0.0 - 8.0.6

CPE2.3

• cpe:2.3:a:apache_foundation:apache_ats:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_ats:6.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_ats:6.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_ats:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_ats:7.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:apache_ats:8.0.6:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread.html/r21ddaf0a4a973f3c43c7ff399ae50d2f858f13f87bd6a9551c5cf6db%40%3Cannounce.trafficserver.apache.org%3E

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.