# CVE-2018-1323: Path traversal in Apache Tomcat Connectors

> Attackers can bypass reverse proxy restrictions to access unintended Tomcat functionality via path traversal in the ISAPI connector.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Mar 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-jxj8-3w7h-p8mx

## What is CVE-2018-1323?

CVE-2018-1323 is a high-severity path traversal vulnerability in Apache Tomcat Connectors, published on 12 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to the URI-worker map did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the reverse proxy.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-1323?

It affects 1 product.


Products: Apache Tomcat Jk Connector.

## How do I fix CVE-2018-1323?

Upgrade to a fixed version.

## Is CVE-2018-1323 being exploited?

There is no known exploitation of CVE-2018-1323 in the wild and no public exploit code.

## Other vulnerabilities in Apache Tomcat Connectors

- [CVE-2016-6808](https://insights.sbomify.com/CVE-2016-6808/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-11759](https://insights.sbomify.com/CVE-2018-11759/): Path traversal in Apache Tomcat Connectors (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1323 and fix it if it is affected.

What it is: CVE-2018-1323 is a high-severity path traversal vulnerability in Apache Tomcat Connectors, published on 12 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1323 in the wild and no public exploit code.

Affected product: Apache Tomcat Connectors. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-1323/ (Markdown: https://insights.sbomify.com/CVE-2018-1323/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1323
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1323
- OSV: https://osv.dev/vulnerability/CVE-2018-1323

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1323/
Summaries are generated and may contain mistakes; the official description above is the record.