CVE-2017-6752 Information disclosure in Cisco Adaptive Security Appliance
Unauthenticated attackers can enumerate valid usernames via the web interface when LDAP and SSL profiles are configured, aiding further reconnaissance.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6752?
CVE-2017-6752 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, published on 7 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) 9.3(3) and 9.6(2) could allow an unauthenticated, remote attacker to determine valid usernames. The attacker could use this information to conduct additional reconnaissance attacks. The vulnerability is due to the interaction between Lightweight Directory Access Protocol (LDAP) and SSL Connection Profile when they are configured together. An attacker could exploit the vulnerability by performing a username enumeration attack to the IP address of the device. An exploit could allow the attacker to determine valid usernames. Cisco Bug IDs: CSCvd47888.
Weakness: CWE-200
Which versions are affected by CVE-2017-6752?
It affects 1 product.
Products include Cisco Adaptive Security Appliance Software.
How do I fix CVE-2017-6752?
No fix has been published for CVE-2017-6752 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-6752 being exploited?
There is no known exploitation of CVE-2017-6752 in the wild and no public exploit code.
Other vulnerabilities in Cisco Adaptive Security Appliance Software
- CVE-2025-20333 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow
- CVE-2016-6366 Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow
- CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection
- CVE-2024-20353 Cisco ASA and FTD Denial of Service
- CVE-2016-6367 Cisco Adaptive Security Appliance (ASA) CLI Remote Code Execution
All Cisco Adaptive Security Appliance Software vulnerabilities
Sources
Also known as GHSA-wvc6-xr2j-qjmh.