HistoryEdit

RUSTSEC-2021-0049

through and through_and causes a double free if the map function panics

Issued
Package
through (crates.io)
Type
Vulnerability
Categories
Keywords
#memory-safety #double-free
Aliases
Details
https://github.com/gretchenfrage/through/issues/1
CVSS Score
9.8 CRITICAL
CVSS Details
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Patched
no patched versions
Keywords
#memory-safety #double-free

Description

through and through_and take a mutable reference as well as a mapping function to change the provided reference. They do this by calling ptr::read on the reference which duplicates ownership and then calling the mapping function.

If the mapping function panics, both the original object and the one duplicated by ptr::read get dropped, causing a double free.