CVE-2020-27866
NETGEAR HTTP Authentication Bypass Vulnerability
Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355.
INFO
Published Date :
Feb. 12, 2021, 12:15 a.m.
Last Modified :
March 26, 2021, 7:34 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2020-27866 has a 7 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-27866
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-27866.
| URL | Resource |
|---|---|
| https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers | Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-20-1451/ | Third Party Advisory VDB Entry |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
APIT is a CLI tool designed for API black-box vulnerability fuzzing. It captures API traffic via browser proxy and conducts deep recognition and mutation of API parameters in a tree structure. Additionally, APIV incorporates various optimization strategies to enhance the precision and efficiency of API vulnerability testing.
APIF is a CLI tool designed for API black-box vulnerability testing. It captures API traffic via browser proxy and conducts deep recognition and mutation of API parameters in a tree structure. Additionally, APIV incorporates various optimization strategies to enhance the precision and efficiency of API vulnerability testing.
None
APIV is a CLI tool designed for API black-box vulnerability testing. It captures API traffic via browser proxy and conducts deep recognition and mutation of API parameters in a tree structure. Additionally, APIV incorporates various optimization strategies to enhance the precision and efficiency of API vulnerability testing.
Rapier is a CLI tool designed for API black-box vulnerability testing. It captures API traffic via browser proxy and conducts deep recognition and mutation of API parameters in a tree structure. Additionally, Rapier incorporates various optimization strategies to enhance the precision and efficiency of API vulnerability testing.
scalpel是一款命令行漏洞扫描工具，支持深度参数注入，拥有一个强大的数据解析和变异算法，可以将常见的数据格式（json, xml, form等）解析为树结构，然后根据poc中的规则，对树进行变异，包括对叶子节点和树结构 的变异。变异完成之后，将树结构还原为原始的数据格式。
cve exploits poc vulnerabilities vulnerability fuzzing scanner
essential templates for kenzer [DEPRECATED]
kenzer vulnerabilities kenzer-templates arpsyndicate
Python Shell Ruby
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-27866 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-27866 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Mar. 26, 2021
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 12, 2021
Action Type Old Value New Value Changed Description This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355. -
CVE Modified by [email protected]
Mar. 12, 2021
Action Type Old Value New Value Changed Description This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 firmware version 1.2.0.62_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355. -
Initial Analysis by [email protected]
Feb. 16, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers No Types Assigned https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers Vendor Advisory Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-20-1451/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-20-1451/ Third Party Advisory, VDB Entry Added CWE NIST CWE-287 Added CPE Configuration AND OR *cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:ac2100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:ac2400:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:ac2600:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r6700:v2:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r6800:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r6900:v2:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r7200:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r7350:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r7400:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0.76 OR cpe:2.3:h:netgear:r7450:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.104 OR cpe:2.3:h:netgear:r6220:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.104 OR cpe:2.3:h:netgear:r6230:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.78 OR cpe:2.3:h:netgear:r6260:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.78 OR cpe:2.3:h:netgear:r6330:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.78 OR cpe:2.3:h:netgear:r6350:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.0.78 OR cpe:2.3:h:netgear:r6850:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.76 OR cpe:2.3:h:netgear:r6120:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.48 OR cpe:2.3:h:netgear:r6020:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.48 OR cpe:2.3:h:netgear:r6080:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-27866 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-27866
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.49 }} -0.01%
score
0.76565
percentile