Description
The default configuration of the auth/saml plugin in Mahara before 1.4.2 sets the "Match username attribute to Remote username" option to false, which allows remote SAML IdP servers to spoof users of other SAML IdP servers by using the same internal username.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | mahara | 1.2.6-2+squeeze4 | DSA-2467-1 |
Advisories 1
- DSA-2467-1 mahara - insecure defaults Debian Security (DSA / DLA) · Mar 9, 2026