GHSA-9f94-5g5w-gf6r: Aws lc fips sys CRL Distribution Point Scope Check Vulnerability

HIGH
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CVSS 7.4
CWE-295
Published
Advisory Summary

GHSA-9f94-5g5w-gf6r is a HIGH (CVSS 7.4) crl distribution point scope check vulnerability (CWE-295: Improper Certificate Validation) affecting Aws lc fips sys libraries in the crates.io ecosystem. The issue involves crl distribution point scope check logic error in aws-lc. Remediation is available by upgrading affected packages to version 0.13.13, 0.39.0.

GHSA-9f94-5g5w-gf6r at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-9f94-5g5w-gf6r
Severity HIGH
CVSS v3.1 Base Score 7.4
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Aws lc fips sys
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix GHSA-9f94-5g5w-gf6r

To remediate this vulnerability, upgrade all affected Aws lc fips sys dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

aws-lc-fips-sys fixed: 0.13.13 
Upgrade aws-lc-fips-sys to 0.13.13
aws-lc-sys fixed: 0.39.0 
Upgrade aws-lc-sys to 0.39.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for aws-lc-fips-sys

How to Check if You Are Affected

To determine whether your application is affected by GHSA-9f94-5g5w-gf6r, inspect your project dependencies for Aws lc fips sys:

inspect dependencies for aws-lc-fips-sys

Analyze the terminal output to locate any version of Aws lc fips sys in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.13), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Aws lc fips sys, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary AWS-LC is an open-source, general-purpose cryptographic library. ### Impact A logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point (IDP) extensions. Customers of AWS services do not need to take action. aws-lc-sys and aws-lc-fips-sys contain code from AWS-LC. Applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys. ### Impacted versions: * aws-lc-sys >= v0.15.0, < v0.39.0 * aws-lc-fips-sys >= v0.13.0, < v0.13.13 ### Patches The patch is included in aws-lc-sys v0.39.0 and aws-lc-fips-sys v0.13.13. ### Workarounds Applications can workaround this issue if they do not enable CRL checking (X509_V_FLAG_CRL_CHECK). Applications using complete (non-partitioned) CRLs without IDP extensions are also not affected. Otherwise, there is no workaround and applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys. ### References If you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting/) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.

GHSA-9f94-5g5w-gf6r Affected Aws lc fips sys Versions

2 component(s)
Fixed Versions:
0.13.130.39.0
Product / Package Ecosystem Affected Versions Fixed Version
aws-lc-fips-sys
 crates.io
≥ 0.13.0
< 0.13.13
0.13.13
aws-lc-sys
 crates.io
≥ 0.15.0
< 0.39.0
0.39.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/aws/aws-lc-rs/security/advisories/GHSA-9f94-5g5w-gf6r
Aws lc fips sys Security Information SECURITY
https://aws.amazon.com/security/security-bulletins/2026-010-AWS
Aws lc fips sys Source Repository REPOSITORY
https://github.com/aws/aws-lc-rs
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2026-0042.html
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2026-0048.html

Frequently Asked Questions

What is GHSA-9f94-5g5w-gf6r?
GHSA-9f94-5g5w-gf6r is a security vulnerability in Aws lc fips sys involving CRL Distribution Point Scope Check Logic Error in AWS-LC under CWE-295: Improper Certificate Validation.
Which Aws lc fips sys versions are affected?
Affected versions include releases prior to 0.13.13, 0.39.0 across affected packages: aws-lc-fips-sys, aws-lc-sys.
What version fixes GHSA-9f94-5g5w-gf6r?
Upgrading to 0.13.13, 0.39.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is aws-lc-fips-sys affected?
Yes, aws-lc-fips-sys is affected in releases prior to 0.13.13. Upgrade your dependency to 0.13.13 or later.
Is aws-lc-sys affected?
Yes, aws-lc-sys is affected in releases prior to 0.39.0. Upgrade your dependency to 0.39.0 or later.
What is the CVSS score of GHSA-9f94-5g5w-gf6r?
GHSA-9f94-5g5w-gf6r has a CVSS v3.1 base score of 7.4 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with GHSA-9f94-5g5w-gf6r?
GHSA-9f94-5g5w-gf6r is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check crates.io dependencies for GHSA-9f94-5g5w-gf6r?
Run the dependency tree command: 'inspect dependencies for aws-lc-fips-sys'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9f94-5g5w-gf6r",
  "modified" : "2026-03-20T20:35:14Z",
  "published" : "2026-03-20T20:35:14Z",
  "aliases" : [ ],
  "summary" : "CRL Distribution Point Scope Check Logic Error in AWS-LC",
  "details" : "### Summary\n\nAWS-LC is an open-source, general-purpose cryptographic library.\n\n### Impact \n\nA logic error in CRL distribution point matching in AWS-LC allows a revoked certificate to bypass revocation checks during certificate validation, when the application enables CRL checking and uses partitioned CRLs with Issuing Distribution Point (IDP) extensions.\n\nCustomers of AWS services do not need to take action. aws-lc-sys and aws-lc-fips-sys contain code from AWS-LC. Applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys.\n\n### Impacted versions:\n* aws-lc-sys >= v0.15.0, < v0.39.0\n* aws-lc-fips-sys >= v0.13.0, < v0.13.13\n\n### Patches \n\nThe patch is included in aws-lc-sys v0.39.0 and aws-lc-fips-sys v0.13.13.\n\n### Workarounds\n\nApplications can workaround this issue if they do not enable CRL checking (X509_V_FLAG_CRL_CHECK). Applications using complete (non-partitioned) CRLs without IDP extensions are also not affected.\n\nOtherwise, there is no workaround and applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys.\n\n### References\n\nIf you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting/) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "aws-lc-fips-sys"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.13.0"
      }, {
        "fixed" : "0.13.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "aws-lc-sys"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.15.0"
      }, {
        "fixed" : "0.39.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/aws/aws-lc-rs/security/advisories/GHSA-9f94-5g5w-gf6r"
  }, {
    "type" : "WEB",
    "url" : "https://aws.amazon.com/security/security-bulletins/2026-010-AWS"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/aws/aws-lc-rs"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2026-0042.html"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2026-0048.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-20T20:35:14Z",
    "nvd_published_at" : null
  }
}