CVE-2017-12632 Apache NiFi host header poisoning issue

What is CVE-2017-12632?

CVE-2017-12632 is a high-severity server-side request forgery vulnerability in Apache Nifi, published on 23 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A malicious host header in an incoming HTTP request could cause NiFi to load resources from an external server. The fix to sanitize host headers and compare to a controlled whitelist was applied on the Apache NiFi 1.5.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

Weakness: CWE-20

Which versions are affected by CVE-2017-12632?

2 open source packages ship an affected version, including org.apache.nifi:nifi. It affects 1 product.

Products include Apache Nifi.

How do I fix CVE-2017-12632?

Upgrade org.apache.nifi:nifi to 1.5.0 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2017-12632 being exploited?

There is no known exploitation of CVE-2017-12632 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 Critical 9.8
• CVE-2017-15697 Apache NiFi XSS issue in context path handling Critical 9.8
• CVE-2017-5636 Injection in Apache NiFi Critical 9.8
• CVE-2026-68981 Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests High 8.8
• CVE-2023-36542 Apache NiFi: Potential Code Injection with Properties Referencing Remote Resources High 8.8

All Apache Nifi vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w4x6-j349-9r57.