F5 BIG-IP up to 11.2.1/11.5.4/11.6.1/12.1.2 TLS Protection resource consumption

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4.4	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in F5 BIG-IP up to 11.2.1/11.5.4/11.6.1/12.1.2. Affected by this vulnerability is an unknown functionality of the component TLS Protection. Performing a manipulation results in resource consumption. This vulnerability is known as CVE-2017-6161. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 11.2.1/11.5.4/11.6.1/12.1.2 (Firewall Software). It has been classified as problematic. This affects an unknown code of the component TLS Protection. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

In F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator software version 12.0.0 - 12.1.2, 11.6.0 - 11.6.1, 11.4.0 - 11.5.4, 11.2.1, when ConfigSync is configured, attackers on adjacent networks may be able to bypass the TLS protections usually used to encrypted and authenticate connections to mcpd. This vulnerability may allow remote attackers to cause a denial-of-service (DoS) attack via resource exhaustion.

The bug was discovered 10/26/2017. The weakness was published 10/27/2017 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is uniquely identified as CVE-2017-6161 since 02/21/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 104193 (F5 Networks BIG-IP : ConfigSync mcpd vulnerability (K62279530)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370632 (F5 BIG-IP ConfigSync mcpd Denial Of Service Vulnerability (K62279530)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104193) and SecurityFocus (BID 101636†). Similar entries are available at VDB-108737, VDB-108736, VDB-108734 and VDB-108733. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Firewall Software

Vendor

Name

BIG-IP

Version

License

commercial

Website

Vendor: https://f5.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104193
Nessus Name: F5 Networks BIG-IP : ConfigSync mcpd vulnerability (K62279530)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/21/2017 🔍
10/26/2017 +247 days 🔍
10/26/2017 +0 days 🔍
10/26/2017 +0 days 🔍
10/27/2017 +1 days 🔍
10/27/2017 +0 days 🔍
10/27/2017 +0 days 🔍
10/28/2017 +1 days 🔍
01/05/2023 +1895 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K62279530
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-6161 (🔍)
GCVE (CVE): GCVE-0-2017-6161
GCVE (VulDB): GCVE-100-108735
SecurityFocus: 101636 - Multiple F5 BIG-IP Products CVE-2017-6161 Security Bypass Vulnerability
SecurityTracker: 1039675

See also: 🔍

Entryinfo

Created: 10/28/2017 10:36
Updated: 01/05/2023 09:23
Changes: 10/28/2017 10:36 (68), 12/01/2019 15:51 (6), 01/21/2021 07:45 (2), 01/05/2023 09:23 (3)
Complete: 🔍
Cache ID: 216::103