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CVE-2021-34739

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/11/2021
Last modified:
07/11/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.10
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:h:cisco:sf250-24:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-24_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-24p:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-24p_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-48:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-48_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-48hp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-48hp_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-08:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-08_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-08hp:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-08hp_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-10p:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sf250-10p_firmware:*:*:*:*:*:*:*:* 2.5 (including)
cpe:2.3:h:cisco:sf250-18:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools