Improper input validation in Python Flask module in BIG-IQ Centralized Management and F5OS

Published: 2021-06-23

Risk	Medium
Patch available	NO
Number of vulnerabilities	2
CVE-ID	CVE-2018-1000656 CVE-2019-1010083
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	BIG-IQ Centralized Management Server applications / Remote management servers, RDP, SSH F5OS Operating systems & Components / Operating system
Vendor	F5 Networks

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU18150

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-1000656

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when processing JSON data in incorrect encoding. A remote attacker can supply a specially crafted JSON string and consume all available memory resources.

Successful exploitation of the vulnerability may allow an attacker to perform denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BIG-IQ Centralized Management: 6.0.1 - 8.0.0.1

F5OS: 1.1.0 - 1.1.2

External links

http://support.f5.com/csp/article/K63597327

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Input validation error

EUVDB-ID: #VU19269