CVE-2018-7644

Name	CVE-2018-7644
Description	The XmlSecLibs library as used in the saml2 library in SimpleSAMLphp before 1.15.3 incorrectly verifies signatures on SAML assertions, allowing a remote attacker to construct a crafted SAML assertion on behalf of an Identity Provider that would pass as cryptographically valid, thereby allowing them to impersonate a user from that Identity Provider, aka a key confusion issue.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1298-1, DSA-4127-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
simplesamlphp (PTS)	bullseye	1.19.0-1	fixed
	bullseye (security)	1.19.0-1+deb11u1	fixed
	bookworm (security)	1.19.7-1+deb12u1	fixed
	sid, trixie, bookworm	1.19.7-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
simplesamlphp	source	wheezy	1.9.2-1+deb7u3	DLA-1298-1
simplesamlphp	source	jessie	1.13.1-2+deb8u1	DSA-4127-1
simplesamlphp	source	stretch	1.14.11-1+deb9u1	DSA-4127-1
simplesamlphp	source	(unstable)	1.15.3-1

https://simplesamlphp.org/security/201802-01
Fixed by: https://github.com/simplesamlphp/saml2/commit/88a9ae848c4b310b1c53b5700893d890999dd930