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CVE-2017-1000430 — Integer overflow in base64 — CVE Details

CRITICAL

Integer overflow in base64

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

Summary

Affected versions of this crate suffered from an integer overflow bug when calculating the size of a buffer to use when encoding base64 using the `encode_config_buf` and `encode_config` functions. If the input string was large, this would cause a buffer to be allocated that was too small. Since this function writes to the buffer using unsafe code, it would allow an attacker to write beyond the buffer, causing memory corruption and possibly the execution of arbitrary code. This flaw was corrected by using checked arithmetic to calculate the size of the buffer.

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 base64 to 0.5.2 or later
cargo update -p base64 --precise 0.5.2

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

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
base64
crates.io
All versions0.5.2

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

References

Frequently Asked Questions

What is CVE-2017-1000430?
Integer overflow in base64 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-2017-1000430?
CVE-2017-1000430 affects base64. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-1000430 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-x67x-vg9m-65c3
RUSTSEC-2017-0004

Related CVEs

More crates.io advisories

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