Vulnerability identifier: #VU54949
Vulnerability risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-134
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Apple iOS
Operating systems & Components /
Operating system
iPadOS
Operating systems & Components /
Operating system
Vendor: Apple Inc.
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a format string error in the wifid daemon when processing SSID name while connecting to a Wi-Fi hotspot. A remote attacker can supply a specially crafted SSID name that contains format string specifiers and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Apple iOS: 14.5 18E199 - 14.5.1 18E212, 14.2 18B92 - 14.2.1 18B121, 14.0 18A373 - 14.0.1 18A393, 14.4 18D52 - 14.4.2 18D70
iPadOS: 14.0 18A373 - 14.6 18F72
External links
http://blog.zecops.com/research/meet-wifidemon-ios-wifi-rce-0-day-vulnerability-and-a-zero-click-vulnerability-that-was-silently-patched/
http://www.bleepingcomputer.com/news/security/iphone-bug-breaks-wifi-when-you-join-hotspot-with-unusual-name/
http://blog.chichou.me/2021/06/20/quick-analysis-wifid/
http://support.apple.com/en-us/HT212601
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.