CVE-2016-10931 — Improper Certificate Validation in openssl — CVE...

HIGH

Improper Certificate Validation in openssl

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

Summary

All versions of rust-openssl prior to 0.9.0 contained numerous insecure defaults including off-by-default certificate verification and no API to perform hostname verification. Unless configured correctly by a developer, these defaults could allow an attacker to perform man-in-the-middle attacks. The problem was addressed in newer versions by enabling certificate verification by default and exposing APIs to perform hostname verification. Use the SslConnector and SslAcceptor types to take advantage of these new features (as opposed to the lower-level SslContext type).

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 openssl to 0.9.0 or later

cargo update -p openssl --precise 0.9.0

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
openssl	crates.io	All versions	0.9.0

Vulnerability Classification

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

CWE-295
Improper Certificate ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.1 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

References

Frequently Asked Questions

What is CVE-2016-10931?: Improper Certificate Validation in openssl This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.1/10).
How do I check if my project is affected by CVE-2016-10931?: CVE-2016-10931 affects openssl. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2016-10931 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

8.1

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-34p9-f4q3-c4r7

RUSTSEC-2016-0001

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