Candidate: CVE-2017-18122
PublicDate: 2018-02-02 15:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18122
 https://simplesamlphp.org/security/201710-01
 https://github.com/simplesamlphp/simplesamlphp/commit/e2d53086abbb253efb24ddcb49b116246eb0b6ca (v1.14.17)
Description:
 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.
Ubuntu-Description:
Notes:
Bugs:
 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889286
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H [8.1 HIGH]


Patches_simplesamlphp:
upstream_simplesamlphp: released (1.15.0-1)
precise/esm_simplesamlphp: DNE
trusty_simplesamlphp: ignored (reached end-of-life)
trusty/esm_simplesamlphp: DNE (trusty was needed)
xenial_simplesamlphp: ignored (end of standard support, was needed)
artful_simplesamlphp: ignored (reached end-of-life)
bionic_simplesamlphp: not-affected (1.15.2-1)
cosmic_simplesamlphp: not-affected (1.15.2-1)
disco_simplesamlphp: not-affected (1.15.2-1)
eoan_simplesamlphp: not-affected (1.15.2-1)
focal_simplesamlphp: not-affected (1.15.2-1)
groovy_simplesamlphp: not-affected (1.15.2-1)
hirsute_simplesamlphp: not-affected (1.15.2-1)
impish_simplesamlphp: not-affected (1.15.2-1)
jammy_simplesamlphp: not-affected (1.15.2-1)
devel_simplesamlphp: not-affected (1.15.2-1)