CVE-2021-34203
CVSS V2 Medium 4.8
CVSS V3 High 8.1
Description
D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this function uses the original default password and port. An attacker can easily use telnet to log in, modify routing information, monitor the traffic of all devices under the router, hijack DNS and phishing attacks. In addition, this interface is likely to be questioned by customers as a backdoor, because the interface should not be exposed.
Overview
- CVE ID
- CVE-2021-34203
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-06-16T20:15:07
- Last Modified Date
- 2022-07-12T17:42:04
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:dlink:dir-2640-us_firmware:1.01b04:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:dlink:dir-2640-us:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:L/Au:N/C:P/I:P/A:N
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.8
- Severity
- MEDIUM
- Exploitability Score
- 6.5
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://www.dlink.com/en/security-bulletin/ | Vendor Advisory |
| http://d-link.com | Vendor Advisory |
| http://dir-2640-us.com | Broken Link |
| https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203 | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-34203 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34203 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:09:59 | Added to TrackCVE | |||
| 2022-12-05 04:34:16 | 2021-06-16T20:15Z | 2021-06-16T20:15:07 | CVE Published Date | updated |
| 2022-12-05 04:34:16 | 2022-07-12T17:42:04 | CVE Modified Date | updated | |
| 2022-12-05 04:34:16 | Analyzed | Vulnerability Status | updated |