CVE-2021-38703

Wireless devices running certain Arcadyan-derived firmware (such as KPN Experia WiFi 1.00.15) do not properly sanitise user input to the syslog configuration form. An authenticated remote attacker could leverage this to alter the device configuration and achieve remote code execution. This can be exploited in conjunction with CVE-2021-20090.

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://7bits.nl/journal/posts/cve-2021-38703-kpn-experia-wifi-root-shell/	Exploit Third Party Advisory
https://www.kpnwebshop.com/modems-routers/producten/experia-wifi/2	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:kpn:experia_wifi_firmware:1.00.15:*:*:*:*:*:*:*

cpe:2.3:h:kpn:experia_wifi:-:*:*:*:*:*:*:*

Information

Published : 2021-09-01 05:15

Updated : 2021-09-13 07:11

NVD link : CVE-2021-38703

Mitre link : CVE-2021-38703

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

kpn

experia_wifi_firmware
experia_wifi

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