PT-2021-17971 · Rust+6 · Rust+6

Sfackler · CVE-2021-28875 · Published 2021-03-01 · Updated 2022-11-03

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: Rust versions prior to 1.50.0

Description: The issue arises from the read to end() function in the standard library not validating the return value from Read in an unsafe context, potentially leading to a buffer overflow.

Recommendations: For versions prior to 1.50.0, update to version 1.50.0 or later to resolve the issue. As a temporary workaround, consider adding manual validation for the return value from Read in unsafe contexts to prevent potential buffer overflows.

Exploit

Fix

Unchecked Return Value

Weakness Enumeration

CWE-252

Related Identifiers

ALT-PU-2021-1420

ALT-PU-2021-3365

ALT-PU-2022-1778

CESA-2021_3063

CVE-2021-28875

OESA-2021-1214

RHSA-2021:3042

RHSA-2021:3063

RHSA-2021_3063

RLSA-2021:3063

Affected Products

Alt Linux

Astra Linux

Centos

Debian

Red Hat

Rocky Linux

Rust

References · 30

• 🔥 https://github.com/rust-lang/rust/issues/80894 · Exploit
• https://github.com/rust-lang/rust/pull/80895 · Patch
• https://osv.dev/vulnerability/CVE-2021-28875 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-28875 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-28875 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-3063.html · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2021:3063 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-36323 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-28875 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-36317 · Security Note
• https://security.gentoo.org/glsa/202210-09 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-28875 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28879 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-28876 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-36318 · Security Note