CVE-2017-18122 is a signature-validation bypass vulnerability affecting SimpleSAMLphp through version 1.14.16, specifically when used as a SAML 1.1 Service Provider. An attacker can impersonate any user of any Identity Provider by crafting a SAML response with multiple assertions, where at least one is validly signed, allowing attribute merging and entityID manipulation. This vulnerability carries a high CVSS score of 8.1 due to its network-based attack vector, high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.14.16CPE matchmatch criteria | cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.