The orchard of stray sheep mac os. FortiGuard Labs Threat Analysis Report on an Memory Corruption Vulnerability in QuartzCore while Handling Shape Object. Leaf on the wind mac os.
On March 25, 2019, Apple released macOS Mojave 10.14.4 and iOS 12.2. These two updates fixed a number of security vulnerabilities, including CVE-2019-8507 in QuartzCore (aka CoreAnimation), which I reported to Apple on January 3, 2019 using our FortiGuard Labs responsible disclosure process, read more. For more details on the Apple updates, please refer to https://support.apple.com/en-us/HT209600. In this blog I will provide a detailed analysis of this issue on macOS. Some of the analysis techniques used can be found in my previous blog, “Detailed Analysis of macOS/iOS Vulnerability CVE-2019-6231”.
- This User Tip is designed for Mac's that are capable of running OS X Snow Leopard (10.6) to any Mac running OS X Lion (10.7) or Mountain Lion. (10.8) The Steps appear to work also in OS X Mavericks (10.9) at this time. Some words: The Steps are numbered, if instructed, then just jump to do that Step or run through them in a process of elimination.
- Available for: OS X Lion v10.7.5 and later. Impact: An application may be able to execute arbitrary code with kernel privileges. Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4703: Juwei Lin (@fuzzerDOTcn) of Trend Micro. Available for: OS X Lion v10.7.5 and later.
File System Corruption: any kind of corruption issue with file system can ultimately results in Mac volume header corruption and eventually causes data loss issue. Other Reasons: Apart from these above given reasons there are few other reasons which may also cause emergence of corruption issue in Mac volume header such as abrupt system shutdown.
0x01 A Quick Look
QuartzCore, also known as CoreAnimation, is a framework used by macOS and iOS to create animatable scene graphics. CoreAnimation uses a unique rendering model where the graphics operations are run in a separate process. On macOS, the process is WindowServer. On iOS, the process is backboard.
The service named com.apple.CARenderServer in QuartzCore is usually referenced as CARenderServer. This service exists in both macOS and iOS, and can be accessed from the Safari Sandbox. A memory corruption vulnerability exists when QuartzCore handles a shape object in the function CA::Render::Decoder::decode_shape() on macOS. This may lead to unexpected application termination.
The following is the crash log of the WindowServer process when this issue is triggered.
![Spores Of Corruption Mac OS Spores Of Corruption Mac OS](https://sporedum.files.wordpress.com/2008/12/pic4.jpg?w=584)
Every now and then my macbook, when switching between programs, I will get these horizontal lines on the screen, that seem to made up of a program background as opposed to solid colour (see picture). My MacBook doesn't freeze all the time but may even eventually. The lines just occupy the screen and disappear after about logging out or restarting only to come back another day. This has been happening for months now and no one seems to have and answer. Not even apple. Took it to the store, sent it in for repair. I would love to know what is going on . Anyone?
Macbook, Mac OS X (10.5.4)
Spores Of Corruption Mac Os X
Posted on Sep 6, 2008 11:46 AM