An issue was discovered in Objective-See KnockKnock, LuLu, TaskExplorer, WhatsYourSign, and procInfo. A maliciously crafted Universal/fat binary can evade third-party code signing checks. By not completing full inspection of the Universal/fat binary, the user of the third-party tool will believe that the code is signed by Apple, but the malicious unsigned code will execute.
The product does not validate, or incorrectly validates, a certificate.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Knockknock | Objective-see | * | 1.9.3 (including) |
| Lulu | Objective-see | * | 0.9.8 (including) |
| Procinfo | Objective-see | - (including) | - (including) |
| Taskexplorer | Objective-see | * | 1.6.0 (including) |
| Whatsyoursign | Objective-see | * | 1.4.0 (including) |