PT-2018-18227 · Simplesamlphp · Simplesamlphp

Adam Goodman + 1 · Published 2018-03-05 · Updated 2022-05-14 · CVE-2018-7711

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: SimpleSAMLphp versions prior to 1.15.4

Description: The issue arises from an incorrect check of return values in the signature validation utilities within the saml2 library of SimpleSAMLphp. This allows an attacker to force an error during validation, resulting in invalid signatures being accepted as valid. The problem stems from a dependency on PHP functionality that interprets a -1 error code as a true boolean value.

Recommendations: For versions prior to 1.15.4, update to version 1.15.4 or later to resolve the issue.

Exploit

Fix

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

CVE-2018-7711

DLA-1314-1

GHSA-G888-G2PP-82HF

Affected Products

Simplesamlphp

References · 13

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2018-7711.yaml · Exploit
• https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d · Patch
• https://simplesamlphp.org/security/201803-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-7711 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-7711 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-7711 · Security Note
• https://ubuntu.com/security/CVE-2018-7711 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-g888-g2pp-82hf · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-7711 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-7711 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-7711 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7711 · Note
• https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html · Note