Memory leak in D-Bus component in F5 BIG-IP products



Published: 2021-04-12
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2020-12049
CWE ID CWE-401
Exploitation vector Local
Public exploit N/A
Vulnerable software
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BIG-IP
Hardware solutions / Firmware

BIG-IQ Centralized Management
Server applications / Remote management servers, RDP, SSH

Vendor F5 Networks, Inc.

Security Advisory

This security advisory describes one low risk vulnerability.

1) Memory leak

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12049

CWE-ID: CWE-401 - Improper Release of Memory Before Removing Last Reference ('Memory Leak')

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak in libdbus when a message exceeds the per-message file descriptor limit. A local user with access to the D-Bus system bus or another system service's private AF_UNIX socket can make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.

Mitigation

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

Vulnerable software versions

BIG-IP: 14.1.0, 14.1.0.2.0.45.4 Hotfix-ENG, 14.1.0.2.0.62.4 Hotfix-ENG, 14.1.0.3.0.79.6-ENG Hotfix, 14.1.0.3.0.97.6-ENG Hotfix, 14.1.0.3.0.99.6-ENG Hotfix, 14.1.0.5.0.15.5-ENG Hotfix, 14.1.0.5.0.36.5-ENG Hotfix, 14.1.0.5.0.40.5-ENG Hotfix, 14.1.0.6.0.11.9-ENG Hotfix, 14.1.0.6.0.14.9-ENG Hotfix, 14.1.0.6.0.68.9-ENG Hotfix, 14.1.0.6.0.70.9-ENG Hotfix, 14.1.1, 14.1.2, 14.1.2-0.89.37, 14.1.2.0.11.37-ENG Hotfix, 14.1.2.0.18.37-ENG Hotfix, 14.1.2.0.32.37-ENG Hotfix, 14.1.2.1, 14.1.2.1.0.14.4-ENG Hotfix, 14.1.2.1.0.16.4-ENG Hotfix, 14.1.2.1.0.34.4-ENG Hotfix, 14.1.2.1.0.46.4-ENG Hotfix, 14.1.2.1.0.83.4 Hotfix-ENG, 14.1.2.1.0.97.4-ENG Hotfix, 14.1.2.1.0.99.4-ENG Hotfix, 14.1.2.1.0.105.4-ENG Hotfix, 14.1.2.1.0.111.4-ENG Hotfix, 14.1.2.1.0.115.4-ENG Hotfix, 14.1.2.1.0.122.4-ENG Hotfix, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.0.120.11, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 16.0.0, 16.0.1, 16.0.1.1, 16.0.1.1.9.6

BIG-IQ Centralized Management: 7.1.0, 7.1.0.3, 8.0.0

CPE External links

https://support.f5.com/csp/article/K16729408

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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