Denial of service in Apache Traffic Server

1) Input validation error

EUVDB-ID: #VU54458

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27737

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the experimental Slicer plugin. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Traffic Server: 9.0.0

CPE2.3

• cpe:2.3:a:apache_foundation:apache_ats:9.0.0:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cannounce.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cdev.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cannounce.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cusers.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.