# CVE-2016-9100: Information disclosure in ASG

> Local attackers can obtain sensitive authentication credentials from authenticated administrators, potentially leading to account takeover.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 May 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-wp7p-m228-g97j

## What is CVE-2016-9100?

CVE-2016-9100 is a high-severity vulnerability in Symantec Corporation ASG, published on 11 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Symantec Advanced Secure Gateway (ASG) 6.6 prior to 6.6.5.13, ASG 6.7 prior to 6.7.3.1, ProxySG 6.5 prior to 6.5.10.6, ProxySG 6.6 prior to 6.6.5.13, and ProxySG 6.7 prior to 6.7.3.1 are susceptible to an information disclosure vulnerability. An attacker with local access to the client host of an authenticated administrator user can, under certain circumstances, obtain sensitive authentication credential information.

Weakness: CWE-255

## Which versions are affected by CVE-2016-9100?

It affects 2 products.


Products: Broadcom Advanced Secure Gateway, Broadcom Symantec Proxysg.

## How do I fix CVE-2016-9100?

No fix has been published for CVE-2016-9100 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-9100 being exploited?

There is no known exploitation of CVE-2016-9100 in the wild and no public exploit code.

## Other vulnerabilities in Symantec Corporation ASG

- [CVE-2023-23952](https://insights.sbomify.com/CVE-2023-23952/): Command injection in Advanced Secure Gateway, Content Analysis (critical 9.8)
- [CVE-2018-5241](https://insights.sbomify.com/CVE-2018-5241/): Auth bypass in Advanced Secure Gateway (ASG) (critical 9.8)
- [CVE-2021-46825](https://insights.sbomify.com/CVE-2021-46825/): Other in Advance Secure Gateway and ProxySG (critical 9.1)
- [CVE-2023-23955](https://insights.sbomify.com/CVE-2023-23955/): Server-side request forgery in Advanced Secure Gateway, Content Analysis (high 8.1)
- [CVE-2023-23953](https://insights.sbomify.com/CVE-2023-23953/): Privilege escalation in Advanced Secure Gateway, Content Analysis (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-9100 and fix it if it is affected.

What it is: CVE-2016-9100 is a high-severity vulnerability in Symantec Corporation ASG, published on 11 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-9100 in the wild and no public exploit code.

Affected product: Symantec Corporation ASG. 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-2016-9100/ (Markdown: https://insights.sbomify.com/CVE-2016-9100/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-9100
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-9100
- OSV: https://osv.dev/vulnerability/CVE-2016-9100

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-9100/
Summaries are generated and may contain mistakes; the official description above is the record.