Vulnerability Details : CVE-2020-5226
Cross-site scripting in SimpleSAMLphp before version 1.18.4. The www/erroreport.php script allows error reports to be submitted and sent to the system administrator. Starting with SimpleSAMLphp 1.18.0, a new SimpleSAML\Utils\EMail class was introduced to handle sending emails, implemented as a wrapper of an external dependency. This new wrapper allows us to use Twig templates in order to create the email sent with an error report. Since Twig provides automatic escaping of variables, manual escaping of the free-text field in www/errorreport.php was removed to avoid double escaping. However, for those not using the new user interface yet, an email template is hardcoded into the class itself in plain PHP. Since no escaping is provided in this template, it is then possible to inject HTML inside the template by manually crafting the contents of the free-text field.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2020-5226
- cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-5226
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-5226
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST | |
4.4
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N |
1.3
|
2.7
|
GitHub, Inc. |
CWE ids for CVE-2020-5226
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2020-5226
-
https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-mj9p-v2r8-wf8w
Cross-site scripting in error reports · Advisory · simplesamlphp/simplesamlphp · GitHubThird Party Advisory
-
https://simplesamlphp.org/security/202001-01
SimpleSAMLphpVendor Advisory
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