Vulnerability Monitor

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CVE-2021-34980

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. When parsing the SOAP_LOGIN_TOKEN environment variable, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14107.

Published

2022-01-13T22:15:12.767

Last Modified

2024-11-21T06:11:38.107

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:C/I:C/A:C

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

6.5

Impact Score

10.0

Weaknesses

Type: Secondary
CWE-121
Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	netgear	r6260_firmware	1.1.0.78_1.0.1	Yes
Hardware	netgear	r6260	-	No

References

https://kb.netgear.com/000064262/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-PSV-2021-0150?article=000064262 Vendor Advisory ([email protected])
https://www.zerodayinitiative.com/advisories/ZDI-21-1242/ Third Party Advisory, VDB Entry ([email protected])
https://kb.netgear.com/000064262/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-PSV-2021-0150?article=000064262 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.zerodayinitiative.com/advisories/ZDI-21-1242/ Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)