vulnerability
Oracle Linux: CVE-2021-28091: ELSA-2021-2989: lasso security update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | Jun 1, 2021 | Aug 3, 2021 | Dec 3, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Jun 1, 2021
Added
Aug 3, 2021
Modified
Dec 3, 2025
Description
Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.
An XML Signature Wrapping (XSW) vulnerability was found in Lasso. This flaw allows an attacker to modify a valid SAML response to include an unsigned SAML assertion, which may be used to impersonate another valid user recognized by the service using Lasso. The highest threat from this vulnerability is to data confidentiality and integrity as well as service availability.
An XML Signature Wrapping (XSW) vulnerability was found in Lasso. This flaw allows an attacker to modify a valid SAML response to include an unsigned SAML assertion, which may be used to impersonate another valid user recognized by the service using Lasso. The highest threat from this vulnerability is to data confidentiality and integrity as well as service availability.
Solutions
oracle-linux-upgrade-lassooracle-linux-upgrade-lasso-develoracle-linux-upgrade-lasso-python
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.