CVE-2021-1311
CVSS V2 Medium 5.5
CVSS V3 Medium 5.4
Description
A vulnerability in the reclaim host role feature of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an authenticated, remote attacker to take over the host role during a meeting. This vulnerability is due to a lack of protection against brute forcing of the host key. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Webex Meetings Server site. A successful exploit would require the attacker to have access to join a Webex meeting, including applicable meeting join links and passwords. A successful exploit could allow the attacker to acquire or take over the host role for a meeting.
Overview
- CVE ID
- CVE-2021-1311
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-01-13T22:15:21
- Last Modified Date
- 2021-01-20T16:12:29
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:* | 1 | OR | 2020-12-15 | |
| cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* | 1 | OR | 3.0 | |
| cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release4:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 5.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- LOW
- Base Score
- 5.4
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 2.5
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-brutef-hostkey-FWRMxVF | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1311 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1311 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:26:45 | Added to TrackCVE | |||
| 2022-12-05 20:10:42 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 20:10:42 | 2021-01-13T22:15Z | 2021-01-13T22:15:21 | CVE Published Date | updated |
| 2022-12-05 20:10:42 | 2021-01-20T16:12:29 | CVE Modified Date | updated | |
| 2022-12-05 20:10:42 | Analyzed | Vulnerability Status | updated |