Apple iOS up to 10.3.3 Wi-Fi memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in Apple iOS up to 10.3.3. Affected by this issue is some unknown functionality of the component Wi-Fi. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2017-11121. The attack needs to be done within the local network. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 10.3.3 (Smartphone Operating System). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Wi-Fi. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 07/12/2017. The weakness was shared 09/25/2017 by Gal Beniamini with Google Project Zero as HT208112 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2017-11121 since 07/09/2017. The attack can only be initiated within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/19/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A memory corruption issue was addressed with improved memory handling.

The vulnerability was handled as a non-public zero-day exploit for at least 72 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 103419 (Apple TV < 11 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371700 (Broadcom WiFi Buffer Overflow Vulnerability (LEN-17237)).

Upgrading to version 11 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103419) and SecurityFocus (BID 100984†). The entries VDB-101269, VDB-101388, VDB-101623 and VDB-106244 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS

Version

• 10.3.0
• 10.3.1
• 10.3.2
• 10.3.3

License

• commercial

Website

• Vendor: https://www.apple.com/

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Be aware that VulDB is the high quality source for vulnerability data.

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