# CVE-2018-5403: Command injection in SecureSphere

> Attackers with valid credentials can execute arbitrary code on Imperva SecureSphere gateways via crafted requests to the web interface.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jan 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qm3j-vvg8-52j9

## What is CVE-2018-5403?

CVE-2018-5403 is a high-severity command injection vulnerability in Imperva SecureSphere, published on 10 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Imperva SecureSphere gateway (GW) running v13, for both pre-First Time Login or post-First Time Login (FTL), if the attacker knows the basic authentication passwords, the GW may be vulnerable to RCE through specially crafted requests, from the web access management interface.

Weakness: CWE-287 (Improper Authentication), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2018-5403?

It affects 1 product.


Products: Imperva Securesphere.

## How do I fix CVE-2018-5403?

No fix has been published for CVE-2018-5403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5403 being exploited?

There is no known exploitation of CVE-2018-5403 in the wild and no public exploit code.

## Other vulnerabilities in Imperva SecureSphere

- [CVE-2018-19646](https://insights.sbomify.com/CVE-2018-19646/): Command injection in n/a (critical 9.8)
- [CVE-2018-16660](https://insights.sbomify.com/CVE-2018-16660/): Command injection in n/a (high 8.8)
- [CVE-2018-5413](https://insights.sbomify.com/CVE-2018-5413/): Privilege escalation in SecureSphere (high 8.8)
- [CVE-2018-5412](https://insights.sbomify.com/CVE-2018-5412/): Command injection in SecureSphere (high 7.8)
- [CVE-2013-4091](https://insights.sbomify.com/CVE-2013-4091/): Information disclosure in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5403 and fix it if it is affected.

What it is: CVE-2018-5403 is a high-severity command injection vulnerability in Imperva SecureSphere, published on 10 Jan 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-2018-5403 in the wild and no public exploit code.

Affected product: Imperva SecureSphere. 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-2018-5403/ (Markdown: https://insights.sbomify.com/CVE-2018-5403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5403
- OSV: https://osv.dev/vulnerability/CVE-2018-5403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5403/
Summaries are generated and may contain mistakes; the official description above is the record.