CVE-2017-18122
Published: 2 February 2018
A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid. Attributes contained in all the assertions received will be merged and the entityID of the first assertion received will be used, allowing an attacker to impersonate any user of any IdP given an assertion signed by the targeted IdP.
Priority
Status
Package | Release | Status |
---|---|---|
simplesamlphp Launchpad, Ubuntu, Debian |
impish |
Not vulnerable
(1.15.2-1)
|
hirsute |
Not vulnerable
(1.15.2-1)
|
|
xenial |
Needed
|
|
kinetic |
Not vulnerable
(1.15.2-1)
|
|
lunar |
Not vulnerable
(1.15.2-1)
|
|
artful |
Ignored
(end of life)
|
|
bionic |
Not vulnerable
(1.15.2-1)
|
|
cosmic |
Not vulnerable
(1.15.2-1)
|
|
disco |
Not vulnerable
(1.15.2-1)
|
|
eoan |
Not vulnerable
(1.15.2-1)
|
|
focal |
Not vulnerable
(1.15.2-1)
|
|
groovy |
Not vulnerable
(1.15.2-1)
|
|
jammy |
Not vulnerable
(1.15.2-1)
|
|
trusty |
Does not exist
(trusty was needed)
|
|
upstream |
Released
(1.15.0-1)
|
|
mantic |
Not vulnerable
(1.15.2-1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.1 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |