| 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 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| simplesamlphp (PTS) | jessie, jessie (lts) | 1.13.1-2+deb8u3 | fixed |
| stretch (security), stretch (lts), stretch | 1.14.11-1+deb9u2 | fixed | |
| buster | 1.16.3-1+deb10u2 | fixed | |
| buster (security), buster (lts) | 1.16.3-1+deb10u1 | fixed | |
| bullseye | 1.19.0-1 | 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 | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| 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