Vulnerability in Cisco Asyncos
CVE-2023-20215
A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked. This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% 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 Asyncos — versions 11.7.0-406, 11.7.0-418, 11.7.1-006
- Cisco Secure Web Appliance — versions 11.7.0-406, 11.7.0-418, 11.7.1-049
- Cisco S195
- Cisco S395
- Cisco S695
- Cisco Web Security Appliance S170
- Cisco Web Security Appliance S190
- Cisco Web Security Appliance S380
- Cisco Web Security Appliance S390
- Cisco Web Security Appliance S680
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20215?
- CVE-2023-20215 is a medium-severity vulnerability in Cisco Asyncos, classified under CWE-202. CVSS score: 5.8/10. Published 2023-08-03.
- How severe is CVE-2023-20215?
- Medium severity. CVSS v3 base score is 5.8 out of 10.