CVE-2025-46404

Publication date 5 November 2025

Last updated 18 November 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
lasso	25.10 questing	Not affected
	25.04 plucky	Fixed 2.8.2-8ubuntu0.1
	24.04 LTS noble	Fixed 2.8.2-2ubuntu0.1
	22.04 LTS jammy	Fixed 2.7.0-2ubuntu0.1
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
lasso	Upstream: ?id=c88

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-7872-1
Lasso vulnerabilities
18 November 2025