8.8
HIGH
CVE-2020-27861
NETGEAR Orbi Remote Code Execution (RCE) Vulnerability
Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.

INFO

Published Date :

Feb. 12, 2021, 12:15 a.m.

Last Modified :

March 23, 2021, 6:54 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2020-27861 has a 3 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-2020-27861 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.

ID Vendor Product Action
1 Netgear ex6200_firmware
2 Netgear ex8000_firmware
3 Netgear cbk40_firmware
4 Netgear cbr40_firmware
5 Netgear rbk12_firmware
6 Netgear rbr10_firmware
7 Netgear rbs10_firmware
8 Netgear rbr20_firmware
9 Netgear rbs20_firmware
10 Netgear rbr40_firmware
11 Netgear rbs40_firmware
12 Netgear rbk50_firmware
13 Netgear rbr50_firmware
14 Netgear rbs50_firmware
15 Netgear ex7700_firmware
16 Netgear rbk13_firmware
17 Netgear rbk14_firmware
18 Netgear rbk15_firmware
19 Netgear rbk50v_firmware
20 Netgear cbk43_firmware
21 Netgear rbk20w_firmware
22 Netgear rbk23w_firmware
23 Netgear rbk20_router_firmware
24 Netgear rbk20_satellite_firmware
25 Netgear rbk22_router_firmware
26 Netgear rbk22_satellite_firmware
27 Netgear rbk23_router_firmware
28 Netgear rbk23_satellite_firmware
29 Netgear rbk30_firmware
30 Netgear rbk33_firmware
31 Netgear rbk40_router_firmware
32 Netgear rbk40_satellite_firmware
33 Netgear rbk43_router_firmware
34 Netgear rbk43_satellite_firmware
35 Netgear rbk43s_router_firmware
36 Netgear rbk43s_satellite_firmware
37 Netgear rbk44_router_firmware
38 Netgear rbk44_satellite_firmware
39 Netgear rbk52w_firmware
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-2020-27861.

URL Resource
https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1430/ 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).

Collect some iot-related security articles, including vulnerability analysis, security conferences and papers, etc.

iot-security

Updated: 2 months, 2 weeks ago
211 stars 27 fork 27 watcher
Born at : Dec. 6, 2022, 1:11 p.m. This repo has been linked 46 different CVEs too.

awesome iot exploit resource

iot security awesome awesome-list firmware hardware-hacking iot-device iot-security embedded exploit vulnerability

Updated: 2 months, 2 weeks ago
36 stars 4 fork 4 watcher
Born at : Nov. 13, 2022, 11:03 p.m. This repo has been linked 25 different CVEs too.

This is a repository for collecting and collating vulnerability disclosures, tips, and tools

Updated: 2 months, 3 weeks ago
10 stars 2 fork 2 watcher
Born at : May 30, 2022, 12:18 p.m. This repo has been linked 8 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-27861 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-27861 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. 23, 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 execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.
  • CVE Modified by [email protected]

    Mar. 12, 2021

    Action Type Old Value New Value
    Changed Description This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.
  • 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/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems No Types Assigned https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems Vendor Advisory
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-20-1430/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-20-1430/ Third Party Advisory, VDB Entry
    Added CWE NIST CWE-78
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:cbk40_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:cbk40:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:cbk43_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:cbk43:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:cbr40:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.82 OR cpe:2.3:h:netgear:ex6200:v2:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:ex7700_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.0.210 OR cpe:2.3:h:netgear:ex7700:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:ex8000_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.224 OR cpe:2.3:h:netgear:ex8000:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbk12:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk13_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbk13:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk14_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbk14:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk15_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbk15:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbr10:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.44 OR cpe:2.3:h:netgear:rbs10:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk20w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbk20w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk23w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbk23w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk20_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk20_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk20:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk22_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk22_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk22:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk23_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk23_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk23:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbr20:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbs20:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk30_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbk30:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk33_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbk33:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk40_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk40_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk40:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk43_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk43_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk43:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk43s_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk43s_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk43s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk44_router_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 *cpe:2.3:o:netgear:rbk44_satellite_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbk44:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.36 OR cpe:2.3:h:netgear:rbr40:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.38 OR cpe:2.3:h:netgear:rbs40:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.40 OR cpe:2.3:h:netgear:rbk50:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk50v_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.40 OR cpe:2.3:h:netgear:rbk50v:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbk52w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.40 OR cpe:2.3:h:netgear:rbk52w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.40 OR cpe:2.3:h:netgear:rbr50:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.6.1.40 OR cpe:2.3:h:netgear:rbs50:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-27861 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.14 }} -0.02%

score

0.48269

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability