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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (56.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Cisco Asa 5500
- Cisco Asa 5500 Firmware — versions 8.4\(1\), 8.4(1)
- Cisco Asa 5510
- Cisco Asa 5510 Firmware — versions 8.4\(1\), 8.4(1)
- Cisco Asa 5512-X
- Cisco Asa 5512-X Firmware — versions 8.4\(1\), 8.4(1)
- Cisco Asa 5515-X
- Cisco Asa 5515-X Firmware — versions 8.4\(1\), 8.4(1)
- Cisco Asa 5520
- Cisco Asa 5520 Firmware — versions 8.4\(1\), 8.4(1)
Weakness classification (CWE)
References
- quickview.cloudapps.cisco.com/quickview/bug/CSCtq58884 (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.