Learn about CVE-2017-6752, a vulnerability in Cisco ASA versions 9.3(3) and 9.6(2) allowing unauthorized remote attackers to ascertain valid usernames, potentially leading to further reconnaissance attacks. Find out how to mitigate and prevent this security issue.
A vulnerability in the web interface of Cisco Adaptive Security Appliance (ASA) versions 9.3(3) and 9.6(2) could potentially allow unauthorized remote attackers to ascertain valid usernames, leading to further reconnaissance attacks.
Understanding CVE-2017-6752
What is CVE-2017-6752?
An issue has been identified in the web interface of the Cisco Adaptive Security Appliance (ASA) versions 9.3(3) and 9.6(2) that could potentially allow an unauthorized remote attacker to ascertain valid usernames. This information could then be used for further reconnaissance attacks. The vulnerability originates from the way the Lightweight Directory Access Protocol (LDAP) and SSL Connection Profile interact when configured together.
The Impact of CVE-2017-6752
The vulnerability could enable attackers to carry out username enumeration attacks against the affected device's IP address, leading to the identification of valid usernames.
Technical Details of CVE-2017-6752
Vulnerability Description
The vulnerability in Cisco ASA versions 9.3(3) and 9.6(2) allows unauthenticated remote attackers to determine valid usernames through the interaction of LDAP and SSL Connection Profile.
Affected Systems and Versions
Exploitation Mechanism
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates