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TI-2021-09847 Aliases CVE-2021-28877GHSA-r23x-h32h-x9jh

In the standard library in Rust before 1.51.0, the Zip implementation calls…

Priority LOW 36CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Why it matters now

EPSS 0.01387 72nd percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:*before 1.51.0Vulnerablerust-lang
  • cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:* Versions before 1.51.0 Vulnerable ·rust-lang

Remediation

Red Hat 2 advisories

  • RHSA-2021:3063 Released 2021-08-10 · Red Hat rating Moderate
    rust-toolset:rhel8 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) cargo-1.52.1-1.module+el8.4.0+11282+0729bac9.aarch64::rust-toolset:rhel8, cargo-1.52.1-1.module+el8.4.0+11282+0729bac9.ppc64le::rust-toolset:rhel8, cargo-1.52.1-1.module+el8.4.0+11282+0729bac9.s390x::rust-toolset:rhel8 +40
  • RHSA-2021:3042 Released 2021-08-10 · Red Hat rating Moderate
    rust-toolset-1.52 and rust-toolset-1.52-rust security and enhancement update
    • Red Hat Developer Tools for Red Hat Enterprise Linux Server (v. 7) rust-toolset-1.52-1.52.1-1.el7_9, rust-toolset-1.52-build-1.52.1-1.el7_9, rust-toolset-1.52-cargo-1.52.1-2.el7_9 +13

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Developer Tools for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:3042
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:3063
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28877
  2. 2026-10-03 Alias added: GHSA-r23x-h32h-x9jh

References

Patch 1

Advisory 1

  • TI-2024-16197 Rusts's `std::process::Command` did not properly escape arguments of batch files on Windows CVSS 3.1CRITICAL 10.0
  • TI-2024-03325 Command injection vulnerability in programing languages on Microsoft Windows operating system. CVSS 3.1CRITICAL 9.8
  • TI-2022-06036 Race condition in std::fs::remove_dir_all in rustlang CVSS 3.1HIGH 7.3
  • TI-2018-16034 The Rust Programming Language Standard Library version 1.29.0, 1.28.0, 1.27.2, 1.27.1… CVSS 3.0CRITICAL 9.8
  • TI-2021-11383 In the standard library in Rust before 1.52.0, a double free can occur in the… CVSS 3.1CRITICAL 9.8
  • TI-2021-09849 In the standard library in Rust before 1.52.0, the Zip implementation can report an… CVSS 3.1CRITICAL 9.8
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences