GHSA-qj7f-j6h9-g5rq CVE-2017-12623
XML External Entity Reference in Apache NiFi
- Severity
- 6.5 / 10
- Medium · CVSS 3.0
- Exploit chance (EPSS)
- 1.94%
- Chance of exploitation in the next 30 days. Higher than 80.12% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-611 Improper Restriction of XML External Entity Reference
- Fix
1.4.0- Upgrade org.apache.nifi:nifi to this version or later
Description
An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.apache.nifi:nifi | >= 1.0.0, < 1.4.0 |
1.4.0 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.apache.nifi:nifi Maven → 1.4.0
- maven
<dependency><groupId>org.apache.nifi</groupId><artifactId>nifi</artifactId><version>1.4.0</version></dependency>- gradle
implementation("org.apache.nifi:nifi:1.4.0")
Severity breakdown
CVSS 3.0 6.5
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-611: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How to prevent it
- Implementation, System Configuration: Many XML parsers and validators can be configured to disable external entity expansion.
References
Advisories
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-77hf-23pq-2g7c Code injection in Apache NiFi and NiFi Registry | High | Also affects org.apache.nifi:nifi |
| GHSA-m5r7-w9v3-ghmx Cross-site Scripting in Apache NiFi | Medium | Also affects org.apache.nifi:nifi |
| GHSA-jvx9-rj3w-jq99 Origin Validation Error in Apache NiFi | High | Also affects org.apache.nifi:nifi |
| GHSA-jrcc-7jf5-3pxg Injection in Apache NiFi | Critical | Also affects org.apache.nifi:nifi |
| GHSA-29ph-fjf3-c5cm Apache NiFi XSS issue in context path handling | Critical | Also affects org.apache.nifi:nifi |
| GHSA-w4x6-j349-9r57 Apache NiFi host header poisoning issue | High | Also affects org.apache.nifi:nifi |
| GHSA-p76j-5v6v-6c22 Apache NiFi JMS Deserialization issue | High | Also affects org.apache.nifi:nifi |
| GHSA-g2fm-x3cp-mqw9 Cross-site Scripting in Apache NiFi | Medium | Also affects org.apache.nifi:nifi |
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