Path Traversal in Micronaut-Projects Micronaut-Core
CVE-2021-32769
Micronaut is a JVM-based, full stack Java framework designed for building JVM applications. A path traversal vulnerability exists in versions prior to 2.5.9. With a basic configuration, it is possible to access any file from a filesystem, using "/../../" in the URL. This occurs because Micronaut does not restrict file access to configured paths. The vulnerability is patched in version 2.5.9. As a workaround, do not use `**` in mapping, use only `*`, which exposes only flat structure of a directory not allowing traversal. If using Linux, another workaround is to run micronaut in chroot.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.017 (76.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Micronaut-projects Micronaut-core — versions < 2.5.9
- Objectcomputing Micronaut
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-32769?
- CVE-2021-32769 is a high-severity vulnerability in Micronaut-Projects Micronaut-Core, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-07-16.
- How severe is CVE-2021-32769?
- High severity. CVSS v3 base score is 7.5 out of 10.