Multiple vulnerabilities in F5 BIG-IP APM and BIG-IP APM Clients
| Risk | High |
| Patch available | NO |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-5896 CVE-2020-5897 CVE-2020-5898 |
| CWE-ID | CWE-264 CWE-416 CWE-824 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
BIG-IP APM Hardware solutions / Security hardware applicances APM Clients Hardware solutions / Security hardware applicances |
| Vendor | F5 Networks |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU27873
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-5896
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the BIG-IP Edge Client Windows Installer Service's temporary folder has weak file and folder permissions. A local user can execute signed .exe and MSI files and gain elevated privileges on the client Windows system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsBIG-IP APM: 11.6.1 - 15.1.0
APM Clients: 7.1.5 - 7.1.9
External linkshttp://support.f5.com/csp/article/K15478554
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.
2) Use-after-free
EUVDB-ID: #VU27874
Risk: High
CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-5897
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the BIG-IP Edge Client Windows ActiveX component. A remote attacker can craft a malicious webpage, load it into the Internet Explorer browser by BIG-IP Edge Client users and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsBIG-IP APM: 11.6.0 - 15.1.0
APM Clients: 7.1.5 - 7.1.9
External linkshttp://support.f5.com/csp/article/K20346072
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.
3) Access of Uninitialized Pointer
EUVDB-ID: #VU27876
Risk: Low
CVSSv3.1: 5.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-5898
CWE-ID:
CWE-824 - Access of Uninitialized Pointer
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the BIG-IP Edge Client Windows Stonewall driver does not sanitize the pointer received from the userland. A local user can send specially crafted DeviceIoControl requests to a \\.\urvpndrv device and crash the Windows kernel.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsBIG-IP APM: 11.6.1 - 15.1.0
APM Clients: 7.1.5 - 7.1.9
External linkshttp://support.f5.com/csp/article/K69154630
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.
