HistoryEdit

RUSTSEC-2021-0042

insert_many can drop elements twice on panic

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

Description

Affected versions of insert_many used ptr::copy to move over items in a vector to make space before inserting, duplicating their ownership. It then iterated over a provided Iterator to insert the new items.

If the iterator's .next() method panics then the vector would drop the same elements twice.