CVE-2021-44145 Apache NiFi information disclosure by XXE
An authenticated user can exploit an XXE vulnerability in the TransformXML processor to reveal sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-44145?
CVE-2021-44145 is a medium-severity vulnerability in Apache Nifi, published on 17 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In the TransformXML processor of Apache NiFi before 1.15.1 an authenticated user could configure an XSLT file which, if it included malicious external entity calls, may reveal sensitive information.
Weakness: CWE-200
Which versions are affected by CVE-2021-44145?
3 open source packages ship an affected version, including org.apache.nifi:nifi and nifi. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.nifi:nifi Maven | All versions | 1.15.1 |
org.apache.nifi:nifi Maven | All versions | 1.15.1 |
nifi Bitnami | From 0.1.0 | 1.15.1 |
Products include Apache Nifi.
How do I fix CVE-2021-44145?
Upgrade org.apache.nifi:nifi to 1.15.1 or later.
Is CVE-2021-44145 being exploited?
There is no known exploitation of CVE-2021-44145 in the wild and no public exploit code.
Other vulnerabilities in Apache Nifi
- CVE-2018-1309 Improper Restriction of XML External Entity Reference in Apache NiFi
- CVE-2017-15697 Apache NiFi XSS issue in context path handling
- CVE-2017-5636 Injection in Apache NiFi
- CVE-2026-68981 Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests
- CVE-2023-36542 Apache NiFi: Potential Code Injection with Properties Referencing Remote Resources
Sources
Also known as BIT-nifi-2021-44145, GHSA-rq96-qhc5-vm4r.