Vulnerability Details : CVE-2021-1221
A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation email. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by entering a URL into a field in the user interface. A successful exploit could allow the attacker to generate a Webex Meetings invitation email that contains a link to a destination of their choosing. Because this email is sent from a trusted source, the recipient may be more likely to click the link.
Vulnerability category: Input validation
Products affected by CVE-2021-1221
- cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3_security_patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:webex_meetings:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-1221
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-1221
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
4.1
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N |
2.3
|
1.4
|
Cisco Systems, Inc. | |
|
4.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N |
2.3
|
1.4
|
NIST |
CWE ids for CVE-2021-1221
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: ykramarz@cisco.com (Secondary)
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-1221
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wbx-linkinj-WWZpVqu9
Cisco Webex Meetings and Cisco Webex Meetings Server Software Hyperlink Injection VulnerabilityVendor Advisory
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