USN-7503-1

Jeppe Bonde Weikop discovered that h11 incorrectly handled crafted HTTP requests. A remote attacker could possibly use this issue to smuggle malicious HTTP requests, which could potentially lead to security control bypass and information leakage.

References

Affected packages

Ubuntu:24.04:LTS / python-h11

Package

Name: python-h11
Purl: pkg:deb/ubuntu/python-h11@0.14.0-1ubuntu0.24.04.1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.14.0-1ubuntu0.24.04.1

Affected versions

0.*

0.14.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-h11",
            "binary_version": "0.14.0-1ubuntu0.24.04.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-43859",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7503-1.json"