CVE-2021-35043 Cross-site Scripting in OWASP AntiSamy
Attackers can execute arbitrary scripts via crafted HTML attributes in OWASP AntiSamy when using the HTML output serializer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-35043?
CVE-2021-35043 is a medium-severity cross-site scripting vulnerability in Netapp Active Iq Unified Manager, published on 19 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2021-35043?
2 open source packages ship an affected version, including org.owasp.antisamy:antisamy. It affects 11 products.
| Package | Affected | Fixed in |
|---|---|---|
org.owasp.antisamy:antisamy Maven | From 1.5.7 | 1.6.4 |
org.owasp.antisamy:antisamy Maven | From 1.5.7 | 1.6.4 |
Products include Antisamy Project Antisamy, Netapp Active Iq Unified Manager, Oracle Banking Enterprise Default Management, Oracle Banking Enterprise Default Managment, Oracle Banking Party Management, Oracle Banking Platform and 5 more.
How do I fix CVE-2021-35043?
Upgrade org.owasp.antisamy:antisamy to 1.6.4 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-35043 being exploited?
There is no known exploitation of CVE-2021-35043 in the wild and no public exploit code.
Other vulnerabilities in Netapp Active Iq Unified Manager
Sources
Also known as DEBIAN-CVE-2021-35043, GHSA-9c8w-jrw3-q2c3, UBUNTU-CVE-2021-35043.