Information disclosure in curl implementation within Command Line Interface, EAV Monitors and iRules components in F5 BIG-IP products



Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-8284
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
BIG-IP SSLO
Hardware solutions / Firmware

BIG-IP DDHD
Hardware solutions / Firmware

BIG-IP
Hardware solutions / Firmware

BIG-IP PEM
Hardware solutions / Security hardware applicances

BIG-IP GTM
Hardware solutions / Security hardware applicances

BIG-IP FPS
Hardware solutions / Security hardware applicances

BIG-IP ASM
Hardware solutions / Security hardware applicances

BIG-IP APM
Hardware solutions / Security hardware applicances

BIG-IP Analytics
Hardware solutions / Security hardware applicances

BIG-IP AFM
Hardware solutions / Security hardware applicances

BIG-IP LTM
Hardware solutions / Security hardware applicances

BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc

BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc

BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc

BIG-IP Advanced WAF
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor F5 Networks

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU48893

Risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8284

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the way cURL handles PASV responses. A remote attacker with control over malicious FTP server can use the PASV response to trick curl into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.

Mitigation

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

Vulnerable software versions

BIG-IP SSLO: 14.1.0 - 16.0.1.1

BIG-IP PEM: 14.1.0 - 16.0.1.1

BIG-IP Link Controller: 14.1.0 - 16.0.1.1

BIG-IP GTM: 14.1.0 - 16.0.1.1

BIG-IP FPS: 14.1.0 - 16.0.1.1

BIG-IP DNS: 14.1.0 - 16.0.1.1

BIG-IP DDHD: 14.1.0 - 16.0.1.1

BIG-IP ASM: 14.1.0 - 16.0.1.1

BIG-IP APM: 14.1.0 - 16.0.1.1

BIG-IP Analytics: 14.1.0 - 16.0.1.1

BIG-IP AFM: 14.1.0 - 16.0.1.1

BIG-IP Advanced WAF: 14.1.0 - 16.0.1.1

BIG-IP AAM: 14.1.0 - 16.0.1.1

BIG-IP LTM: 14.1.0 - 16.0.1.1

BIG-IP: 14.1.0 - 16.0.1.1

CPE2.3 External links

http://support.f5.com/csp/article/K63525058


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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



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