Detections
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Ubuntu 24.04 LTS / 24.10 / 25.04 : h11 vulnerability (USN-7503-1)

critical Nessus Plugin ID 235614

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 24.04 LTS / 24.10 / 25.04 host has a package installed that is affected by a vulnerability as referenced in the USN-7503-1 advisory.

 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.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected python3-h11 package.

See Also

https://ubuntu.com/security/notices/USN-7503-1

Plugin Details

Severity: Critical

ID: 235614

File Name: ubuntu_USN-7503-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 5/8/2025

Updated: 5/9/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2025-43859

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:canonical:ubuntu_linux:24.10, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3-h11

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/8/2025

Vulnerability Publication Date: 4/24/2025

Reference Information

CVE: CVE-2025-43859

USN: 7503-1

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