# CVE-2017-3966: Information disclosure in Network Security Management (NSM)

> Remote attackers can hijack user sessions by reusing exposed session tokens in URLs, leading to unauthorized access and potential account takeover.

- **Severity:** Medium 6.4 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Apr 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-p7mx-frqj-j9hq

## What is CVE-2017-3966?

CVE-2017-3966 is a medium-severity vulnerability in McAfee Network Security Management (NSM), published on 4 Apr 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Exploitation of session variables, resource IDs and other trusted credentials vulnerability in the web interface in McAfee Network Security Management (NSM) before 8.2.7.42.2 allows remote attackers to exploit or harm a user's browser via reusing the exposed session token in the application URL.

Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration)

## Which versions are affected by CVE-2017-3966?

It affects 1 product.


Products: Mcafee Network Security Manager.

## How do I fix CVE-2017-3966?

No fix has been published for CVE-2017-3966 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-3966 being exploited?

There is no known exploitation of CVE-2017-3966 in the wild and no public exploit code.

## Other vulnerabilities in McAfee Network Security Management (NSM)

- [CVE-2017-3965](https://insights.sbomify.com/CVE-2017-3965/): SB10192 - Network Security Management (NSM) - Cross-Site Request Forgery (CSRF) (aka Session Riding) vulnerability (high 8.8)
- [CVE-2017-3972](https://insights.sbomify.com/CVE-2017-3972/): SB10192 - Network Security Management (NSM) - Infrastructure-based foot printing vulnerability (high 8.3)
- [CVE-2017-3969](https://insights.sbomify.com/CVE-2017-3969/): SB10192 - Network Security Management (NSM) - Abuse of communication channels vulnerability (high 8.2)
- [CVE-2017-3971](https://insights.sbomify.com/CVE-2017-3971/): SB10192 - Network Security Management (NSM) - Cryptanalysis vulnerability (high 8.2)
- [CVE-2019-3606](https://insights.sbomify.com/CVE-2019-3606/): Data leakage when in an MDR pair by McAfee Network Security Manager 9.x (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-3966 and fix it if it is affected.

What it is: CVE-2017-3966 is a medium-severity vulnerability in McAfee Network Security Management (NSM), published on 4 Apr 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-3966 in the wild and no public exploit code.

Affected product: McAfee Network Security Management (NSM). 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-2017-3966/ (Markdown: https://insights.sbomify.com/CVE-2017-3966/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-3966
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-3966
- OSV: https://osv.dev/vulnerability/CVE-2017-3966

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-3966/
Summaries are generated and may contain mistakes; the official description above is the record.