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Entr'Ouvert Lasso could run malicious code via bogus SAML response

published 11 months ago

Summary

Versions 2.5.1 and 2.8.2 of Entr'Ouvert Lasso may execute unwanted code if they process a specially crafted SAML response. An attacker could send a malicious SAML message to your system and take control of the application. Update to the latest Lasso release or apply the vendor's security patch and ensure you only accept SAML messages from trusted providers.

What to do

Update redhat java-lasso-debuginfo to version 0:2.6.0-12.el8_6.1.
Update redhat lasso to version 0:2.6.0-12.el8_6.1.
Update redhat lasso-debuginfo to version 0:2.6.0-12.el8_6.1.
Update redhat lasso-debugsource to version 0:2.6.0-12.el8_6.1.
Update redhat perl-lasso-debuginfo to version 0:2.6.0-12.el8_6.1.
Update redhat python3-lasso-debuginfo to version 0:2.6.0-12.el8_6.1.

Affected software

Ecosystem	Vendor	Product	Affected versions
Red Hat:rhel_aus:8.6::appstream	redhat	java-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_aus:8.6::appstream	redhat	lasso	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_aus:8.6::appstream	redhat	lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_aus:8.6::appstream	redhat	lasso-debugsource	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_aus:8.6::appstream	redhat	perl-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_aus:8.6::appstream	redhat	python3-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	java-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	lasso	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	lasso-debugsource	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	perl-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_e4s:8.6::appstream	redhat	python3-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	java-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	lasso	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	lasso-debugsource	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	perl-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1
Red Hat:rhel_tus:8.6::appstream	redhat	python3-lasso-debuginfo	< 0:2.6.0-12.el8_6.1 Fix: upgrade to 0:2.6.0-12.el8_6.1

Original advisory text

Red Hat Security Advisory: lasso security update

References

https://access.redhat.com/errata/RHSA-2025:21401 Vendor Advisory
https://access.redhat.com/security/updates/classification/#critical Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2412739 Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21401.... Vendor Advisory
https://access.redhat.com/security/cve/CVE-2025-47151 Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2025-47151 Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2025-47151 Vendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2025-2193 Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2193 Third Party Advisory

Fix within

Internet-facing 3 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker full control (estimated)

Severity

9.8 Critical

Timeline

Published17 Nov 2025

Updated12 Jul 2026

First seen12 Jul 2026

Sources

RHSA-2025:21401 · OSV

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