CVE-2025-46404

Name	CVE-2025-46404
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6058-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
lasso (PTS)	bullseye	2.6.1-3	vulnerable
	bookworm	2.8.1-1	vulnerable
	bookworm (security)	2.8.1-1+deb12u1	fixed
	trixie	2.8.2-9	vulnerable
	trixie (security)	2.8.2-9+deb13u1	fixed
	sid, forky	2.9.0-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
lasso	source	bookworm	2.8.1-1+deb12u1	DSA-6058-1
lasso	source	trixie	2.8.2-9+deb13u1	DSA-6058-1
lasso	source	(unstable)	2.9.0-1

Notes

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2194
https://git.entrouvert.org/lasso.git/commit/?id=c880cad13732bcb50cbd9fa376ea39edb53e7d68 (v2.9.0)