F5 BIG-IP up to 14.1.2/15.0.1 TMM Request input validation

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.
6.4	$5k-$25k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in F5 BIG-IP up to 14.1.2/15.0.1. Impacted is an unknown function of the component TMM. Such manipulation as part of Request leads to input validation. This vulnerability is uniquely identified as CVE-2019-6673. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 14.1.2/15.0.1 (Firewall Software). It has been rated as problematic. Affected by this issue is an unknown part of the component TMM. The manipulation as part of a Request leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

On versions 15.0.0-15.0.1 and 14.0.0-14.1.2, when the BIG-IP is configured in HTTP/2 Full Proxy mode, specifically crafted requests may cause a disruption of service provided by the Traffic Management Microkernel (TMM).

The weakness was disclosed 11/27/2019 (Website). The advisory is shared for download at support.f5.com. This vulnerability is handled as CVE-2019-6673 since 01/22/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/05/2024).

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

The entries VDB-146490, VDB-146489 and VDB-146488 are pretty similar. Once again VulDB remains the best 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: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

01/22/2019 🔍
11/27/2019 +309 days 🔍
11/28/2019 +1 days 🔍
03/05/2024 +1559 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K81557381
Status: Not defined

CVE: CVE-2019-6673 (🔍)
GCVE (CVE): GCVE-0-2019-6673
GCVE (VulDB): GCVE-100-146492
See also: 🔍

Entryinfo

Created: 11/28/2019 09:33
Updated: 03/05/2024 08:11
Changes: 11/28/2019 09:33 (39), 11/28/2019 09:38 (18), 03/05/2024 08:11 (3)
Complete: 🔍
Cache ID: 216::103