Denial of service in Linux kernel ext3/ext4 file system in F5 BIG-IP



Published: 2021-03-12

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU47106

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-14314

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists.

Mitigation

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

Vulnerable software versions

BIG-IP SSLO: 11.6.1 - 16.0.1.1

BIG-IP PEM: 11.6.1 - 16.0.1.1

BIG-IP Link Controller: 11.6.1 - 16.0.1.1

BIG-IP GTM: 11.6.1 - 16.0.1.1

BIG-IP FPS: 11.6.1 - 16.0.1.1

BIG-IP DNS: 11.6.1 - 16.0.1.1

BIG-IP DDHD: 11.6.1 - 16.0.1.1

BIG-IP APM: 11.6.1 - 16.0.1.1

BIG-IP Analytics: 11.6.1 - 16.0.1.1

BIG-IP AFM: 11.6.1 - 16.0.1.1

BIG-IP Advanced WAF: 11.6.1 - 16.0.1.1

BIG-IP AAM: 11.6.1 - 16.0.1.1

BIG-IP LTM: 11.6.1 - 16.0.1.1

BIG-IP: 11.6.1 - 16.0.1.1

BIG-IP ASM: 11.6.1 - 16.0.1.1

BIG-IQ Centralized Management: 6.0.0 - 8.0.0


CPE2.3 External links

http://support.f5.com/csp/article/K67830124

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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