Detections
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Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 / 25.04 : Flask-CORS vulnerabilities (USN-7612-1)

high Nessus Plugin ID 241350

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 / 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7612-1 advisory.

 It was discovered that Flask-CORS did not correctly handle certain regular expressions. A remote attacker could possibly use this issue to leak sensitive information or bypass authentication mechanisms.
 (CVE-2024-6839) It was discovered that Flask-CORS allowed certain CORS headers to be enabled by default. A remote attacker could possibly use this issue to leak sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-6221)

 It was discovered that Flask-CORS did not correctly handle case sensitivity when matching paths. A remote attacker could possibly use this issue to leak sensitive information. (CVE-2024-6866)

 It was discovered that Flask-CORS did not correctly handle certain characters in URL paths. A remote attacker could possibly use this issue to leak sensitive information or bypass authentication mechanisms.
 (CVE-2024-6844)

 Elias Hohl was discovered that Flask-CORS did not correctly sanitize log entries. A remote attacker could possibly use this issue to corrupt log files. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-1681)

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

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

Solution

Update the affected python3-flask-cors package.

See Also

https://ubuntu.com/security/notices/USN-7612-1

Plugin Details

Severity: High

ID: 241350

File Name: ubuntu_USN-7612-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 7/4/2025

Updated: 7/4/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2024-6221

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3-flask-cors, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.10

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/2/2025

Vulnerability Publication Date: 4/19/2024

Reference Information

CVE: CVE-2024-1681, CVE-2024-6221, CVE-2024-6839, CVE-2024-6844, CVE-2024-6866

USN: 7612-1