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Cisco Small Business Series Switches Session Credentials Replay Vulnerability

view advisory published 2021-11-03

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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2021-34739UShigh8.1—
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…
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references

External citations — patches, advisories, analysis.

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remediations (1)

  • FixedCisco Small Business Smart and Managed Switches

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
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