PT-2021-18546 · Crates.Io · Insert Many

Published 2021-01-26 · Updated 2021-08-25 · CVE-2021-29933

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions insert many crate through 2021-01-26

Description An issue in the insert many crate for Rust may cause elements to be dropped twice if the next() method of an iterator panics. This occurs because affected versions of insert many used ptr::copy to move items in a vector, duplicating their ownership, and then iterated over a provided Iterator to insert new items. If the iterator's next() method panics, the vector would drop the same elements twice.

Recommendations For insert many crate through 2021-01-26, consider updating to a version that does not use ptr::copy to move items in a vector, to prevent elements from being dropped twice in case of a panic. As a temporary workaround, consider handling the panic in the next() method to prevent the double drop of elements.

Exploit

Fix

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2021-29933

GHSA-29HG-R7C7-54FR

RUSTSEC-2021-0042

Affected Products

Insert Many

References · 10

• 🔥 https://rustsec.org/advisories/RUSTSEC-2021-0042.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-29933 · Security Note
• https://osv.dev/vulnerability/CVE-2021-29933 · Vendor Advisory
• https://osv.dev/vulnerability/RUSTSEC-2021-0042 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-29hg-r7c7-54fr · Vendor Advisory
• https://github.com/rphmeier/insert_many · Note
• https://github.com/rphmeier/insert_many/issues/1 · Note
• https://crates.io/crates/insert_many · Note
• https://t.me/cvenotify/12746 · Telegram Post
• https://t.me/cvenotify/12470 · Telegram Post