The OWASP AntiSamy project is a collection of APIs for safely allowing users to supply their own HTML
and CSS without exposing the site to XSS vulnerabilities.
OWASP AntiSamy before 1.6.4 allows XSS via HTML attributes when using the HTML output serializer (XHTML is not affected). This was demonstrated by a javascript: URL with : as the replacement for the : character.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2021-35043 - Medium Severity Vulnerability
Vulnerable Library - antisamy-1.5.3.jar
The OWASP AntiSamy project is a collection of APIs for safely allowing users to supply their own HTML and CSS without exposing the site to XSS vulnerabilities.
Library home page: http://www.owasp.org/index.php/Category:OWASP_AntiSamy_Project
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/org/owasp/antisamy/antisamy/1.5.3/antisamy-1.5.3.jar
Dependency Hierarchy: - esapi-2.1.0.1.jar (Root Library) - :x: **antisamy-1.5.3.jar** (Vulnerable Library)
Found in HEAD commit: 0638324b7d503b1f148e5a231d4de747adbd151d
Found in base branch: master
Reachability Analysis
This vulnerability is potentially reachable ``` org.t246osslab.easybuggy.core.servlets.AbstractServlet (Application) -> org.owasp.esapi.ESAPI (Extension) -> org.owasp.esapi.reference.DefaultValidator (Extension) -> org.owasp.esapi.reference.validation.HTMLValidationRule (Extension) ... -> org.owasp.validator.html.scan.AntiSamySAXScanner (Extension) -> org.owasp.validator.html.scan.AbstractAntiSamyScanner (Extension) -> ❌ org.owasp.validator.html.scan.ASHTMLSerializer (Vulnerable Component) ```Vulnerability Details
OWASP AntiSamy before 1.6.4 allows XSS via HTML attributes when using the HTML output serializer (XHTML is not affected). This was demonstrated by a javascript: URL with : as the replacement for the : character.
Publish Date: 2021-07-19
URL: CVE-2021-35043
CVSS 3 Score Details (6.1)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: Required - Scope: Changed - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35043
Release Date: 2021-07-19
Fix Resolution (org.owasp.antisamy:antisamy): 1.6.4
Direct dependency fix Resolution (org.owasp.esapi:esapi): 2.3.0.0
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.