# CVE-2016-0783: Information disclosure in n/a

> Remote attackers can reset arbitrary user passwords by predicting tokens generated from system time, leading to account takeover.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Apr 2016
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-f7c4-r58g-c8jh

## What is CVE-2016-0783?

CVE-2016-0783 is a high-severity vulnerability in n/a, published on 11 Apr 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The sendHashByUser function in Apache OpenMeetings before 3.1.1 generates predictable password reset tokens, which makes it easier for remote attackers to reset arbitrary user passwords by leveraging knowledge of a user name and the current system time.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2016-0783?

It affects 1 product.


Products: Apache Openmeetings.

## How do I fix CVE-2016-0783?

No fix has been published for CVE-2016-0783 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-0783 being exploited?

There is no known exploitation of CVE-2016-0783 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-7664](https://insights.sbomify.com/CVE-2017-7664/): Apache OpenMeetings does not correctly validate uploaded XML documents (critical 10.0)
- [CVE-2024-54676](https://insights.sbomify.com/CVE-2024-54676/): Apache OpenMeetings: Deserialisation of untrusted data in cluster mode (critical 9.8)
- [CVE-2023-28326](https://insights.sbomify.com/CVE-2023-28326/): Apache OpenMeetings: allows user impersonation (critical 9.8)
- [CVE-2016-8736](https://insights.sbomify.com/CVE-2016-8736/): Apache OpenMeetings RCE (critical 9.8)
- [CVE-2017-7673](https://insights.sbomify.com/CVE-2017-7673/): Apache OpenMeetings has Inadequate Encryption Strength (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-0783 and fix it if it is affected.

What it is: CVE-2016-0783 is a high-severity vulnerability in n/a, published on 11 Apr 2016. 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-2016-0783 in the wild and no public exploit code.

Affected product: n/a. 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-2016-0783/ (Markdown: https://insights.sbomify.com/CVE-2016-0783/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-0783
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-0783
- OSV: https://osv.dev/vulnerability/CVE-2016-0783

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-0783/
Summaries are generated and may contain mistakes; the official description above is the record.