#VU29356 Resource exhaustion in Apache Traffic Server


Published: 2020-06-29

Vulnerability identifier: #VU29356

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9494

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Traffic Server
Server applications / Web servers

Vendor: Apache Foundation

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing HTTP/2 HEADERS frames. A remote attacker can send specially crafted HTTP/2 requests to the server, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Traffic Server: 8.0.0 - 8.0.7, 7.1.0 - 7.1.10, 6.2.0 - 6.2.3, 6.1.0 - 6.1.1, 6.0.0, 7.0.0


External links
http://lists.apache.org/thread.html/rf7f86917f42fdaf904d99560cba0c016e03baea6244c47efeb60ecbe%40%3Cdev.trafficserver.apache.org%3E
http://www.debian.org/security/2020/dsa-4710


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability