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Ubuntu 22.04 LTS / 24.04 LTS / 25.04 : Lasso vulnerabilities (USN-7872-1)

critical Nessus Plugin ID 275817

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Synopsis

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

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7872-1 advisory.

 It was discovered that Lasso incorrectly handled certain malformed SAML responses. A remote attacker could possibly use this issue to cause Lasso to crash, resulting in a denial of service. (CVE-2025-46404)

 It was discovered that Lasso incorrectly handled certain malformed SAML assertion responses. A remote attacker could possibly use this issue to cause Lasso to crash, resulting in a denial of service.
 (CVE-2025-46705)

 It was discovered that Lasso incorrectly handled certain malformed SAML responses. A remote attacker could possibly use this issue to cause Lasso to consume memory, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2025-46784)

 It was discovered that Lasso incorrectly handled certain malformed SAML responses. A remote attacker could use this issue to cause Lasso to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-47151)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-7872-1

Plugin Details

Severity: Critical

ID: 275817

File Name: ubuntu_USN-7872-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 11/19/2025

Updated: 11/19/2025

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: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2025-47151

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:liblasso-perl, p-cpe:/a:canonical:ubuntu_linux:liblasso3, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.04, p-cpe:/a:canonical:ubuntu_linux:liblasso3t64, p-cpe:/a:canonical:ubuntu_linux:python3-lasso, p-cpe:/a:canonical:ubuntu_linux:liblasso3-dev

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: 11/18/2025

Vulnerability Publication Date: 11/5/2025

Reference Information

CVE: CVE-2025-46404, CVE-2025-46705, CVE-2025-46784, CVE-2025-47151

USN: 7872-1