# CVE-2019-14857: Open redirect in mod auth openidc

> An open redirect vulnerability in mod_auth_openidc allows attackers to redirect users to malicious sites via URLs with trailing slashes.

- **Severity:** Medium 5.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/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:** 26 Nov 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-14857, DLA-1996-1, GHSA-797h-qjwj-28jc, MGASA-2019-0410, SUSE-SU-2019:2934-1, SUSE-SU-2019:2935-1, UBUNTU-CVE-2019-14857, openSUSE-SU-2019:2499-1

## What is CVE-2019-14857?

CVE-2019-14857 is a medium-severity vulnerability in [UNKNOWN] mod_auth_openidc, published on 26 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in mod_auth_openidc before version 2.4.0.1. An open redirect issue exists in URLs with trailing slashes similar to CVE-2019-3877 in mod_auth_mellon.

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

## Which versions are affected by CVE-2019-14857?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apache2-mod_auth_openidc` | SUSE:Linux Enterprise Module for Server Applications 15 SP1 | All versions | 2.3.8-3.3.1 |
| `apache2-mod_auth_openidc` | SUSE:Linux Enterprise Server 12 SP4 | All versions | 2.4.0-3.7.1 |
| `apache2-mod_auth_openidc` | SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 2.4.0-3.7.1 |
| `apache2-mod_auth_openidc` | openSUSE:Leap 15.1 | All versions | 2.3.8-lp151.2.3.1 |

Products: Openidc Mod Auth Openidc.

## How do I fix CVE-2019-14857?

Upgrade to a fixed version.

## Is CVE-2019-14857 being exploited?

There is no known exploitation of CVE-2019-14857 in the wild and no public exploit code.

## Other vulnerabilities in [UNKNOWN] mod_auth_openidc

- [CVE-2017-6062](https://insights.sbomify.com/CVE-2017-6062/): Auth bypass in n/a (high 8.6)
- [CVE-2017-6413](https://insights.sbomify.com/CVE-2017-6413/): The "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.6 for the Apache HTTP Server does (high 8.6)
- [CVE-2023-28625](https://insights.sbomify.com/CVE-2023-28625/): mod_auth_openidc core dump when OIDCStripCookies is set and an empty Cookie header is supplied (high 7.5)
- [CVE-2017-6059](https://insights.sbomify.com/CVE-2017-6059/): Open redirect in n/a (high 7.5)
- [CVE-2019-1010247](https://insights.sbomify.com/CVE-2019-1010247/): Cross-site scripting in mod auth openidc (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-14857 and fix it if it is affected.

What it is: CVE-2019-14857 is a medium-severity vulnerability in [UNKNOWN] mod_auth_openidc, published on 26 Nov 2019. 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-2019-14857 in the wild and no public exploit code.

Affected product: [UNKNOWN] mod_auth_openidc. 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-2019-14857/ (Markdown: https://insights.sbomify.com/CVE-2019-14857/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14857
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14857
- OSV: https://osv.dev/vulnerability/CVE-2019-14857

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-14857/
Summaries are generated and may contain mistakes; the official description above is the record.