# CVE-2018-1000671: Open redirect in n/a

> Attackers can redirect users to malicious sites or execute scripts via data URIs in the Sympa login referer parameter.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 6 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-1000671, DLA-1512-1, DLA-2441-1, GHSA-rxx7-mqqx-phw8, UBUNTU-CVE-2018-1000671

## What is CVE-2018-1000671?

CVE-2018-1000671 is a medium-severity vulnerability in Debian Debian Linux, published on 6 Sep 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

sympa version 6.2.16 and later contains a CWE-601: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in The "referer" parameter of the wwsympa.fcgi login action. that can result in Open redirection and reflected XSS via data URIs. This attack appear to be exploitable via Victim's browser must follow a URL supplied by the attacker. This vulnerability appears to have been fixed in none available.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2018-1000671?

It affects 2 products.


Products: Debian Debian Linux, Sympa Sympa.

## How do I fix CVE-2018-1000671?

No fix published yet.

## Is CVE-2018-1000671 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-1000671 exists.

Public exploit code:

- Sympa version =>6.2.16 - Cross-Site Scripting (nuclei): http/cves/2018/CVE-2018-1000671.yaml

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- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
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- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1000671 and fix it if it is affected.

What it is: CVE-2018-1000671 is a medium-severity vulnerability in Debian Debian Linux, published on 6 Sep 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-1000671 exists.

Affected product: Debian Debian Linux. 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-2018-1000671/ (Markdown: https://insights.sbomify.com/CVE-2018-1000671/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1000671
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1000671
- OSV: https://osv.dev/vulnerability/CVE-2018-1000671

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1000671/
Summaries are generated and may contain mistakes; the official description above is the record.