Read on uninitialized buffer in postscript
High severity
GitHub Reviewed
Published
Aug 25, 2021
to the GitHub Advisory Database
•
Updated Jun 13, 2023
Description
Reviewed
Aug 19, 2021
Published to the GitHub Advisory Database
Aug 25, 2021
Last updated
Jun 13, 2023
Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation.
Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.
This flaw was fixed in commit
8026286
by zero-initializing the buffer before handing to a user-provided Read.References