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CVE-2021-30454 — Uninitialized memory access in outer_cgi — CVE...

CRITICAL

Uninitialized memory access in outer_cgi

Published August 25, 2021Updated November 8, 2023Source: osv

Summary

An issue was discovered in the outer_cgi crate before 0.2.1 for Rust. A user-provided Read instance receives an uninitialized memory buffer from KeyValueReader.

Advisory Timeline

  • First published August 25, 2021 (1874 days ago).
  • Last revised November 8, 2023 — 804 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update outer_cgi to 0.2.1 or later
cargo update -p outer_cgi --precise 0.2.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
outer_cgi
crates.io
All versions0.2.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2021-30454?
Uninitialized memory access in outer_cgi This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2021-30454?
CVE-2021-30454 affects outer_cgi. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-30454 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-6vmq-jh76-hq43
RUSTSEC-2021-0051

Related CVEs

More crates.io advisories

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