# CVE-2018-15707: Cross-site scripting in Advantech WebAccess

> Cross-site scripting in Advantech WebAccess allows attackers to steal credentials and potentially take over accounts.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Oct 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-576c-8r8h-4gm7

## What is CVE-2018-15707?

CVE-2018-15707 is a medium-severity cross-site scripting vulnerability in Advantech Webaccess, published on 31 Oct 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Advantech WebAccess 8.3.1 and 8.3.2 are vulnerable to cross-site scripting in the Bwmainleft.asp page. An attacker could leverage this vulnerability to disclose credentials amongst other things.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2018-15707?

It affects 1 product.


Products: Advantech Webaccess.

## How do I fix CVE-2018-15707?

No fix has been published for CVE-2018-15707 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15707 being exploited?

There is no known exploitation of CVE-2018-15707 in the wild and no public exploit code.

Public exploit code:

- Advantech WebAccess SCADA 8.3.2 - Remote Code Execution (exploitdb)

## Other vulnerabilities in Advantech Webaccess

- [CVE-2014-9208](https://insights.sbomify.com/CVE-2014-9208/): Multiple stack-based buffer overflows in unspecified DLL files in Advantech WebAccess before 8.0.1 allow remote attackers to execute arbitra (critical 10.0)
- [CVE-2021-33023](https://insights.sbomify.com/CVE-2021-33023/): Advantech WebAccess (critical 9.8)
- [CVE-2021-38389](https://insights.sbomify.com/CVE-2021-38389/): Advantech WebAccess (critical 9.8)
- [CVE-2021-38408](https://insights.sbomify.com/CVE-2021-38408/): Memory corruption in Advantech WebAccess (critical 9.8)
- [CVE-2020-12019](https://insights.sbomify.com/CVE-2020-12019/): Memory corruption in WebAccess Node (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15707 and fix it if it is affected.

What it is: CVE-2018-15707 is a medium-severity cross-site scripting vulnerability in Advantech Webaccess, published on 31 Oct 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-15707 in the wild and no public exploit code.

Affected product: Advantech Webaccess. 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-2018-15707/ (Markdown: https://insights.sbomify.com/CVE-2018-15707/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15707
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15707
- OSV: https://osv.dev/vulnerability/CVE-2018-15707

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15707/
Summaries are generated and may contain mistakes; the official description above is the record.