Vulnerability · Published Nov 4, 2021 · Assigned by cisco
CVE-2021-34739Cisco Small Business Series Switches Session Credentials Replay Vulnerability
High 8.1
In plain English
A high-severity security flaw in Cisco Small Business Smart and Managed Switches from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).
Official description
A vulnerability in the web-based management interface of multiple Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to replay valid user session credentials and gain unauthorized access to the web-based management interface of an affected device. This vulnerability is due to insufficient expiration of session credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack against an affected device to intercept valid session credentials and then replaying the intercepted credentials toward the same device at a later time. A successful exploit could allow the attacker to access the web-based management interface with administrator privileges.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Small Business Smart and Managed Switches | n/a |
Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- 20211103 Cisco Small Business Series Switches Session Credentials Replay Vulnerability vendor-advisory, x_refsource_CISCO