Description
This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | iOS | unspecified – < iOS 12.4 | iOS 12.4 |
| Apple | macOS | unspecified – < macOS Mojave 10.14.6 | macOS Mojave 10.14.6 |
| Apple | tvOS | unspecified – < tvOS 12.4 | tvOS 12.4 |
| Apple | watchOS | unspecified – < watchOS 5.3 | watchOS 5.3 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address EDB-47608 · dos · Nov 11, 2019 · verified
- macOS / iOS NSKeyedUnarchiver - Use-After-Free of ObjC Objects when Unarchiving OITSUIntDictionary Instances EDB-47189 · dos · Jul 30, 2019 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.