CVE-2021-40847
Vulnerability from cvelistv5
Published
2021-09-21 17:04
Modified
2024-08-04 02:51
Severity ?
Summary
The update process of the Circle Parental Control Service on various NETGEAR routers allows remote attackers to achieve remote code execution as root via a MitM attack. While the parental controls themselves are not enabled by default on the routers, the Circle update daemon, circled, is enabled by default. This daemon connects to Circle and NETGEAR to obtain version information and updates to the circled daemon and its filtering database. However, database updates from NETGEAR are unsigned and downloaded via cleartext HTTP. As such, an attacker with the ability to perform a MitM attack on the device can respond to circled update requests with a crafted, compressed database file, the extraction of which gives the attacker the ability to overwrite executable files with attacker-controlled code. This affects R6400v2 1.0.4.106, R6700 1.0.2.16, R6700v3 1.0.4.106, R6900 1.0.2.16, R6900P 1.3.2.134, R7000 1.0.11.123, R7000P 1.3.2.134, R7850 1.0.5.68, R7900 1.0.4.38, R8000 1.0.4.68, and RS400 1.5.0.68.
References
cve@mitre.orghttps://blog.grimm-co.com/2021/09/mama-always-told-me-not-to-trust.htmlExploit, Third Party Advisory
cve@mitre.orghttps://kb.netgear.com/000064039/Security-Advisory-for-Remote-Code-Execution-on-Some-Routers-PSV-2021-0204Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.grimm-co.com/2021/09/mama-always-told-me-not-to-trust.htmlExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://kb.netgear.com/000064039/Security-Advisory-for-Remote-Code-Execution-on-Some-Routers-PSV-2021-0204Vendor Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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