Executive Summary
This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-27253 | First vendor Publication | 2021-04-14 |
| Vendor | Cve | Last vendor Modification | 2021-04-23 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 8.8 | ||
| Base Score | 8.8 | Environmental Score | 8.8 |
| impact SubScore | 5.9 | Temporal Score | 8.8 |
| Exploitabality Sub Score | 2.8 | ||
| Attack Vector | Adjacent | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:A/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 8.3 | Attack Range | Adjacent network |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 6.5 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the rc_service parameter provided to apply_bind.cgi. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12303. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27253 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-787 | Out-of-bounds Write (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
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| Os | 2 | |
| Os | 2 | |
| Os | 1 | |
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| Os | 1 | |
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| Os | 2 | |
| Os | 2 | |
| Os | 2 | |
| Os | 2 |
Sources (Detail)
| Source | Url |
|---|---|
| MISC | https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabiliti... https://www.zerodayinitiative.com/advisories/ZDI-21-249/ |
Alert History
| Date | Informations |
|---|---|
| 2021-04-23 21:23:08 |
|
| 2021-04-14 21:23:22 |
|
