Information disclosure in Simplesamlphp
CVE-2020-5225
Log injection in SimpleSAMLphp before version 1.18.4. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (49.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Simplesamlphp — versions < 1.18.4
Weakness classification (CWE)
References
- github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-6gc6-m364-85ww (Third Party Advisory)
- simplesamlphp.org/security/202001-02 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-5225?
- CVE-2020-5225 is a medium-severity vulnerability in Simplesamlphp, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.4/10. Published 2020-01-24.
- How severe is CVE-2020-5225?
- Medium severity. CVSS v3 base score is 4.4 out of 10.