CVE-2021-34947

NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability

Description

NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13055.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
EPSS 0.10%
Vendor Advisory netgear.com
Affected: NETGEAR R7800
Published at:
Updated at:

References

Link Tags
https://www.zerodayinitiative.com/advisories/ZDI-21-1116/
https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34947?
CVE-2021-34947 has been scored as a high severity vulnerability.
How to fix CVE-2021-34947?
To fix CVE-2021-34947, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34947 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34947 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34947?
CVE-2021-34947 affects NETGEAR R7800.
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