CVE-2017-7670

Severity CVSS v4.0:

Pending analysis

Type:

CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

Publication date:

10/07/2017

Last modified:

20/04/2025

Description

The Traffic Router component of the incubating Apache Traffic Control project is vulnerable to a Slowloris style Denial of Service attack. TCP connections made on the configured DNS port will remain in the ESTABLISHED state until the client explicitly closes the connection or Traffic Router is restarted. If connections remain in the ESTABLISHED state indefinitely and accumulate in number to match the size of the thread pool dedicated to processing DNS requests, the thread pool becomes exhausted. Once the thread pool is exhausted, Traffic Router is unable to service any DNS request, regardless of transport protocol.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:apache:traffic_control::::::::		1.8.0 (including)
cpe:2.3:a:apache:traffic_control:1.8.1:rc0::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc1::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc2::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc3::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc4::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc5::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc6::::::

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:apache:traffic_control::::::::		1.8.0 (including)
cpe:2.3:a:apache:traffic_control:1.8.1:rc0::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc1::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc2::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc3::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc4::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc5::::::
cpe:2.3:a:apache:traffic_control:2.0.0:rc6::::::

CVE-2017-7670

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools