CVE-2021-28034 — Drop of uninitialized memory in stack_dst — CVE...

CRITICAL

Drop of uninitialized memory in stack_dst

Published September 1, 2021Updated November 8, 2023Source: osv

Summary

Affected versions of stack_dst used a push_inner function that increased the internal length of the array and then called val.clone(). If the val.clone() call panics, the stack could drop an already dropped element or drop uninitialized memory. This issue was fixed in `2a4d538` by increasing the length of the array after elements are cloned.

Advisory Timeline

First published September 1, 2021 (1867 days ago).
Last revised November 8, 2023 — 797 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo

Update stack_dst to 0.6.1 or later

cargo update -p stack_dst --precise 0.6.1

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

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

Package	Ecosystem	Affected	Fixed In
stack_dst	crates.io	All versions	0.6.1

Vulnerability Classification

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

CWE-908
View on MITRE

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-2021-28034?: Drop of uninitialized memory in stack_dst 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-2021-28034?: CVE-2021-28034 affects stack_dst. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-28034 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-45w7-7g63-2m5w

CVE-2021-28035

GHSA-8mjx-h23h-w2pg

RUSTSEC-2021-0033

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