Vulnerability Monitor

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CVE-2021-35973

NETGEAR WAC104 devices before 1.0.4.15 are affected by an authentication bypass vulnerability in /usr/sbin/mini_httpd, allowing an unauthenticated attacker to invoke any action by adding the &currentsetting.htm substring to the HTTP query, a related issue to CVE-2020-27866. This directly allows the attacker to change the web UI password, and eventually to enable debug mode (telnetd) and gain a shell on the device as the admin limited-user account (however, escalation to root is simple because of weak permissions on the /etc/ directory).

Published

2021-06-30T15:15:10.607

Last Modified

2024-11-21T06:12:52.027

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-697

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	netgear	wac104_firmware	< 1.0.4.15	Yes
Hardware	netgear	wac104	-	No

References

https://gynvael.coldwind.pl/?lang=en&id=736 Exploit, Third Party Advisory ([email protected])
https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075 Vendor Advisory ([email protected])
https://gynvael.coldwind.pl/?lang=en&id=736 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kb.netgear.com/000063785/Security-Advisory-for-Authentication-Bypass-on-WAC104-PSV-2021-0075 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)