PT-2021-17195 · Qwutils · Qwutils

Qwertz19281 · Published 2021-02-03 · Updated 2022-05-24 · CVE-2021-26954

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: qwutils crate versions prior to 0.3.1

Description: An issue in the qwutils crate can cause a double drop when a Clone panic occurs, specifically in the insert slice clone function. This happens because affected versions of the crate use ptr::copy when inserting into the middle of a Vec, temporarily duplicating ownership and calling the clone method of a user-provided element. If the clone call panics, it can result in an element being double-freed.

Recommendations: For versions prior to 0.3.1, update to version 0.3.1 or later to resolve the issue. As a temporary workaround, consider avoiding the use of insert slice clone when working with elements that may panic during cloning, until a patch is applied.

Exploit

Fix

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2021-26954

GHSA-68P4-PJPF-XWCQ

RUSTSEC-2021-0018

Affected Products

Qwutils

References · 10

• 🔥 https://rustsec.org/advisories/RUSTSEC-2021-0018.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-26954 · Security Note
• https://osv.dev/vulnerability/RUSTSEC-2021-0018 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-26954 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-68p4-pjpf-xwcq · Vendor Advisory
• https://github.com/qwertz19281/rust_utils/commit/20cb73d · Note
• https://github.com/qwertz19281/rust_utils · Note
• https://github.com/qwertz19281/rust_utils/issues/3 · Note
• https://crates.io/crates/qwutils · Note
• https://t.me/cvenotify/9700 · Telegram Post