F5 BIG-IP ASM/Advanced WAF up to 16.0.0.1 JSON Payload of resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in F5 BIG-IP ASM and Advanced WAF up to 16.0.0.1. It has been declared as problematic. This vulnerability affects unknown code of the component JSON Payload Handler. Executing a manipulation of the argument of can lead to resource consumption. The identification of this vulnerability is CVE-2020-27718. There is no exploit available.

Detailsinfo

A vulnerability has been found in F5 BIG-IP ASM and Advanced WAF up to 16.0.0.1 (Firewall Software) and classified as problematic. This vulnerability affects some unknown processing of the component JSON Payload Handler. The manipulation of the argument of with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.

The weakness was shared 12/25/2020 as K58102101. The advisory is available at support.f5.com. This vulnerability was named CVE-2020-27718. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Firewall Software

Vendor

Name

Version

License

commercial

Website

Vendor: https://f5.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2020 🔍
12/25/2020 +0 days 🔍
12/25/2020 +0 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K58102101
Status: Not defined

CVE: CVE-2020-27718 (🔍)
GCVE (CVE): GCVE-0-2020-27718
GCVE (VulDB): GCVE-100-166774

Entryinfo

Created: 12/25/2020 13:15
Changes: 12/25/2020 13:15 (39)
Complete: 🔍
Cache ID: 216::103