CVE-2021-1521
CVSS V2 Medium 6.1
CVSS V3 Medium 6.5
Description
A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause an affected IP camera to reload. This vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected IP camera. A successful exploit could allow the attacker to cause the affected IP camera to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Overview
- CVE ID
- CVE-2021-1521
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-05-06T13:15:11
- Last Modified Date
- 2021-05-17T17:41:56
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8400_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8400:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8000p_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8000p:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8020_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8020:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8030_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8030:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8070_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8070:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8620_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8620:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8630_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8630:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:video_surveillance_8930_firmware:*:*:*:*:*:*:*:* | 1 | OR | 1.0.9-11 | |
| cpe:2.3:h:cisco:video_surveillance_8930:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 6.1
- Severity
- MEDIUM
- Exploitability Score
- 6.5
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcameras-dos-fc3F6LzT | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-1521 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1521 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:15:57 | Added to TrackCVE | |||
| 2022-12-05 01:36:42 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-05 01:36:42 | 2021-05-06T13:15Z | 2021-05-06T13:15:11 | CVE Published Date | updated |
| 2022-12-05 01:36:42 | 2021-05-17T17:41:56 | CVE Modified Date | updated | |
| 2022-12-05 01:36:42 | Analyzed | Vulnerability Status | updated |