High severity · published Feb 4, 2021
CVE-2020-27872
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 1.2.0.62_1.0.1 routers
8.8
CVSS
0.9%
EPSS
No
On KEV
Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 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 improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11365.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ac2100 Firmware · Netgear
before 1.2.0.76 · source: NVD
AF
Ac2400 Firmware · Netgear
before 1.2.0.76 · source: NVD
AF
Ac2600 Firmware · Netgear
before 1.2.0.76 · source: NVD
RF
R6020 Firmware · Netgear
before 1.0.0.48 · source: NVD
RF
R6080 Firmware · Netgear
before 1.0.0.48 · source: NVD
RF
R6120 Firmware · Netgear
before 1.0.0.76 · source: NVD
RF
R6220 Firmware · Netgear
before 1.1.0.104 · source: NVD
RF
R6230 Firmware · Netgear
before 1.1.0.104 · source: NVD
RF
R6260 Firmware · Netgear
before 1.1.0.78 · source: NVD
RF
R6330 Firmware · Netgear
before 1.1.0.78 · source: NVD
RF
R6350 Firmware · Netgear
before 1.1.0.78 · source: NVD
RF
R6700 Firmware · Netgear
before 1.2.0.76 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27872
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27872
Vendor Advisory
https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-071/
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