Cisco Small Business Smart and Managed Switches Session Management Vulnerability (Cisco Cisco Small Business 200 Series Smart Switches)
At a glance
- Source
- NVD
- EPSS
- EPSS 3.04 % · percentile 88 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in session management for the web-based interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to defeat authentication protections and gain unauthorized access to the management interface. The attacker could obtain the privileges of the highjacked session account, which could include administrator privileges on the device. The vulnerability is due to the use of weak entropy generation for session identifier values. An attacker could exploit this vulnerability to determine a current session identifier through brute force and reuse that session identifier to take over an ongoing session. In this way, an attacker could take actions within the management interface with privileges up to the level of the administrative user.
Weaknesses (CWE)
- CWE-287 — Improper Authentication
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | HIGH 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24568
- GCVE · GCVE-0-2020-3297
CERT-FR advisories
- CERTFR-2020-AVI-404 — Vulnérabilité dans les commutateurs Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:sg250x-24_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250x-24p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250x-48_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250x-48p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-08_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-08hp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-10p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-18_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-26_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-26hp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-26p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-50_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-50hp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg250-50p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf250-24_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf250-24p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf250-48_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf250-48hp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-10_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-10p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-10mp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg355-10p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-28_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-28p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350-28mp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf350-48_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf350-48p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sf350-48mp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350xg-2f10_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350xg-24f_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350xg-24t_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350xg-48t_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-24_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-24p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-24mp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-48_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-48p_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sg350x-48mp_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sx550x-16ft_firmware:*:*:*:*:*:*:*:*< 2.5.5.47cpe:2.3:o:cisco:sx550x-24ft_firmware:*:*:*:*:*:*:*:*< 2.5.5.47- +78 more
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Small Business 200 Series Smart Switches | affected n/a |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |