Log Injection Affecting simplesamlphp/simplesamlphp package, versions <1.18.4
Snyk CVSS
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Test your applications- Snyk ID SNYK-PHP-SIMPLESAMLPHPSIMPLESAMLPHP-543287
- published 26 Jan 2020
- disclosed 24 Jan 2020
- credit Frederic Vleminckx
Introduced: 24 Jan 2020
CVE-2020-5225 Open this link in a new tabHow to fix?
Upgrade simplesamlphp/simplesamlphp to version 1.18.4 or higher.
Overview
simplesamlphp/simplesamlphp is a PHP implementation of a SAML 2.0 service provider and identity provider, also compatible with Shibboleth 1.3 and 2.0.
Affected versions of this package are vulnerable to Log Injection. The www/erroreport.php script, which receives error reports and sends them via email to the system administrator, did not properly sanitize the report identifier obtained from the request. This allows an attacker, under specific circumstances, to inject new log lines by manually crafting this report ID. When configured to use the file logging handler, SimpleSAMLphp will output all its logs by appending each log line to a given file. Since the reportID parameter received in a request sent to www/errorreport.php was not properly sanitized, it was possible to inject newline characters into it, effectively allowing a malicious user to inject new log lines with arbitrary content.