Sander Bos discovered a time of check to time of use (TOCTTOU) vulnerability in apport that allowed a user to cause core files to be written in arbitrary directories.
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.
Link | Tags |
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https://usn.ubuntu.com/usn/usn-4171-1 | third party advisory |
https://usn.ubuntu.com/usn/usn-4171-2 | third party advisory |