Auth bypass in Cisco Asa 5500
CVE-2011-2054
A vulnerability in the Cisco ASA that could allow a remote attacker to successfully authenticate using the Cisco AnyConnect VPN client if the Secondary Authentication type is LDAP and the password is left blank, providing the primary credentials are correct. The vulnerabilities is due to improper input validation of certain parameters passed to the affected software. An attacker must have the correct primary credentials in order to successfully exploit this vulnerability.
Vulnerability class: Broken Authentication
EPSS: 0.009 (54.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Cisco Asa_5500
- Cisco Asa_5500_firmware — versions 8.4\(1\)
- Cisco Asa_5510
- Cisco Asa_5510_firmware — versions 8.4\(1\)
- Cisco Asa_5512-x
- Cisco Asa_5512-x_firmware — versions 8.4\(1\)
- Cisco Asa_5515-x
- Cisco Asa_5515-x_firmware — versions 8.4\(1\)
- Cisco Asa_5520
- Cisco Asa_5520_firmware — versions 8.4\(1\)
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2011-2054?
- CVE-2011-2054 is a medium-severity vulnerability in Cisco Asa 5500, classified under Improper Authentication. CVSS score: 4.3/10. Published 2020-02-19.
- How severe is CVE-2011-2054?
- Medium severity. CVSS v3 base score is 4.3 out of 10.