PT-2020-17524 · Rust · Simple-Slab

Published 2020-09-03 · Updated 2021-08-25 · CVE-2020-35892

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions simple-slab crate versions prior to 0.3.3

Description The issue is related to the Slab::index() function not performing boundary checking, leading to out-of-bounds read access. Additionally, the Slab::remove() function has an off-by-one error, causing memory leakage and a drop of uninitialized memory.

Recommendations For simple-slab crate versions prior to 0.3.3, update to version 0.3.3 or later to resolve the issue. As a temporary workaround, consider disabling the Slab::index() and Slab::remove() functions until a patch is available. Restrict access to the simple-slab crate to minimize the risk of exploitation.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

CWE-193

Related Identifiers

CVE-2020-35892

GHSA-438G-FX34-4H9M

GHSA-HQC8-J86X-2764

RUSTSEC-2020-0039

Affected Products

Simple-Slab

References · 11

• https://osv.dev/vulnerability/CVE-2020-35892 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-438g-fx34-4h9m · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35892 · Security Note
• https://osv.dev/vulnerability/GHSA-hqc8-j86x-2764 · Vendor Advisory
• https://osv.dev/vulnerability/RUSTSEC-2020-0039 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35893 · Security Note
• https://github.com/nathansizemore/simple-slab/issues/2 · Note
• https://github.com/nathansizemore/simple-slab · Note
• https://github.com/nathansizemore/simple-slab/commit/5e0524c1db836e2192e1cd818848d96937c0b587 · Note
• https://rustsec.org/advisories/RUSTSEC-2020-0039.html · Note
• https://crates.io/crates/simple-slab · Note