CVE-2017-13903
It allows remote attackers to modify the application state by leveraging incorrect message handling, as demonstrated by use of an Apple Watch to obtain an encryption key and unlock a door.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in certain Apple products. iOS before 11.2.1 is affected. tvOS before 11.2.1 is affected. The issue involves the "HomeKit" component. It allows remote attackers to modify the application state by leveraging incorrect message handling, as demonstrated by use of an Apple Watch to obtain an encryption key and unlock a door.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.06% probability · 63th percentile
- CISA KEV
- Not listed
- Affected
- apple/iphone os · apple/tvos
- Source
- product-security@apple.com
References
- http://www.securityfocus.com/bid/102182Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040008Third Party Advisory, VDB Entry
- https://support.apple.com/HT208357Vendor Advisory
- https://support.apple.com/HT208359Vendor Advisory
- https://www.engadget.com/2017/12/21/apple-ignored-a-major-homekit-security-flaw-for-six-weeks/Press/Media Coverage
- http://www.securityfocus.com/bid/102182Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040008Third Party Advisory, VDB Entry
- https://support.apple.com/HT208357Vendor Advisory
- https://support.apple.com/HT208359Vendor Advisory
- https://www.engadget.com/2017/12/21/apple-ignored-a-major-homekit-security-flaw-for-six-weeks/Press/Media Coverage
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.