F5 BIG-IP APM Client up to 7.1.7.0 on Windows Legacy Logon Mode access control

Summaryinfo

A vulnerability was found in F5 BIG-IP APM Client up to 7.1.7.0 on Windows. It has been rated as critical. Affected by this issue is some unknown functionality of the component Legacy Logon Mode. This manipulation causes access control. This vulnerability is registered as CVE-2018-5547. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in F5 BIG-IP APM Client up to 7.1.7.0 on Windows (Firewall Software) and classified as critical. Affected by this vulnerability is an unknown function of the component Legacy Logon Mode. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Windows Logon Integration feature of F5 BIG-IP APM client prior to version 7.1.7.1 for Windows by default uses Legacy logon mode which uses a SYSTEM account to establish network access. This feature displays a certificate user interface dialog box which contains the link to the certificate policy. By clicking on the link, unprivileged users can open additional dialog boxes and get access to the local machine windows explorer which can be used to get administrator privilege. Windows Logon Integration is vulnerable when the APM client is installed by an administrator on a user machine. Users accessing the local machine can get administrator privileges

The bug was discovered 08/17/2018. The weakness was published 08/17/2018 (Website). The advisory is shared at support.f5.com. This vulnerability is known as CVE-2018-5547 since 01/11/2018. An attack has to be approached locally. The successful exploitation requires a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 7.1.7.1 eliminates this vulnerability.

Similar entry is available at VDB-123024. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP APM Client

Version

• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6
• 7.1.7.0

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion