Auth bypass in Cisco iOS Software
CVE-2019-1758
A vulnerability in 802.1x function of Cisco IOS Software on the Catalyst 6500 Series Switches could allow an unauthenticated, adjacent attacker to access the network prior to authentication. The vulnerability is due to how the 802.1x packets are handled in the process path. An attacker could exploit this vulnerability by attempting to connect to the network on an 802.1x configured port. A successful exploit could allow the attacker to intermittently obtain access to the network.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Cisco iOS Software — versions 12.2(60)EZ12
- Cisco iOS — versions 15.2(3)ea1, 15.1(2)sy4a, 15.1\(2\)sy5
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327… (vendor-advisory, Patch, Vendor Advisory)
- www.securityfocus.com/bid/107616 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2019-1758?
- CVE-2019-1758 is a medium-severity vulnerability in Cisco iOS Software, classified under Improper Authentication. CVSS score: 4.7/10. Published 2019-03-28.
- How severe is CVE-2019-1758?
- Medium severity. CVSS v3 base score is 4.7 out of 10.