CVE-2003-0971

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2003-12-15 · updated 2026-06-16

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.

Affected products

GNU Privacy Guard: 1.0.2, 1.0.3, 1.0.3b, 1.0.4, 1.0.5, 1.0.6 (+6)

References

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000798
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000277.html
http://marc.info/?l=bugtraq&m=106995769213221&w=2
http://secunia.com/advisories/10304
http://secunia.com/advisories/10349
http://secunia.com/advisories/10399
http://secunia.com/advisories/10400
http://www.debian.org/security/2004/dsa-429
http://www.kb.cert.org/vuls/id/940388
http://www.mandriva.com/security/advisories?name=MDKSA-2003:109

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