CVE-2021-21969
CVSS V2 Medium 6.8
CVSS V3 High 8.1
Description
An out-of-bounds write vulnerability exists in the HandleSeaCloudMessage functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. The HandleIncomingSeaCloudMessage function uses at [4] the json_object_get_string to populate the p_payload global variable. The p_payload is only 0x100 bytes long, and the total MQTT message could be up to 0x201 bytes. Because the function json_object_get_string will fill str based on the length of the json’s value and not the actual str size, this would result in a possible out-of-bounds write.
Overview
- CVE ID
- CVE-2021-21969
- Assigner
- talos-cna@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-02-04T23:15:10
- Last Modified Date
- 2022-10-01T02:12:04
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2021-1396 | Exploit Technical Description Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-21969 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21969 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 17:01:46 | Added to TrackCVE | |||
| 2022-12-06 08:36:05 | 2022-02-04T23:15Z | 2022-02-04T23:15:10 | CVE Published Date | updated |
| 2022-12-06 08:36:05 | 2022-10-01T02:12:04 | CVE Modified Date | updated | |
| 2022-12-06 08:36:05 | Analyzed | Vulnerability Status | updated |