PT-2020-17560 · Rust · Concread

Published 2020-11-13 · Updated 2021-08-25 · CVE-2020-35928

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions concread crate versions prior to 0.2.6

Description An issue in the concread crate allows attackers to cause an ARCache<K,V> data race by sending types that do not implement Send/Sync. The affected versions unconditionally implemented Send/Sync traits for the ARCache<K, V> type, enabling users to send or access types that do not implement Send/Sync, which can cause a data race.

Recommendations For concread crate versions prior to 0.2.6, update to version 0.2.6 or later, which adds bounds K: Send + Sync & V: Send + Sync to the affected Send/Sync trait implementations, correcting the flaw.

Exploit

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2020-35928

GHSA-4XJ5-VV9X-63JP

RUSTSEC-2020-0092

Affected Products

Concread

References · 9

• 🔥 https://rustsec.org/advisories/RUSTSEC-2020-0092.html · Exploit
• https://osv.dev/vulnerability/RUSTSEC-2020-0092 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35928 · Security Note
• https://osv.dev/vulnerability/GHSA-4xj5-vv9x-63jp · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-35928 · Vendor Advisory
• https://github.com/kanidm/concread/issues/48 · Note
• https://github.com/kanidm/concread · Note
• https://t.me/cibsecurity/21458 · Telegram Post
• https://crates.io/crates/concread · Note