GHSA-857q-xmph-p2v5

Suggest an improvement
Source
https://github.com/advisories/GHSA-857q-xmph-p2v5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-857q-xmph-p2v5/GHSA-857q-xmph-p2v5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-857q-xmph-p2v5
Downstream
Published
2024-08-09T20:41:38Z
Modified
2026-09-10T03:50:17Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
s2n-tls's mTLS API ordering may skip client authentication
Details

Impact

An API ordering issue in s2n-tls can cause client authentication to unexpectedly not be enabled on the server when it otherwise appears to be. Server applications are impacted if client authentication is enabled by calling s2n_connection_set_config() before calling s2n_connection_set_client_auth_type().

Applications are not impacted if these APIs are called in the opposite order, or if client authentication is enabled on the config with s2n_config_set_client_auth_type(). s2n-tls clients verifying server certificates are not impacted.

Impacted versions: < v1.5.0.

Patches

The patch is included in v1.5.0 [1].

Workarounds

Applications can workaround this issue by calling s2n_connection_set_config() after calling s2n_connection_set_client_auth_type(), or by enabling client authentication on the config with s2n_config_set_client_auth_type().

If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [2] or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

[1] https://github.com/aws/s2n-tls/releases/tag/v1.5.0

[2] https://aws.amazon.com/security/vulnerability-reporting

Database specific 
{
    "cwe_ids": [
        "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-09T20:41:38Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
}
References

Affected packages

crates.io / s2n-tls

Package

Name
s2n-tls
View open source insights on deps.dev
Purl
pkg:cargo/s2n-tls

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.3.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-857q-xmph-p2v5/GHSA-857q-xmph-p2v5.json"