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Vulnerability record · CVE-2003-0971 · published 15 December 2003

CVE-2003-0971: Gnu privacy guard vulnerability

Gnu · Privacy Guard

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.

5.0 CVSS 2.0 Medium EPSS 2.9% · top 13.8%
5.0CVSS 2.0 base score
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
34References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000798
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html PatchVendor Advisory
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000277.html Patch
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 US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2003:109
http://www.novell.com/linux/security/advisories/2003_048_gpg.html
http://www.redhat.com/support/errata/RHSA-2003-390.html
http://www.redhat.com/support/errata/RHSA-2003-395.html
http://www.securityfocus.com/bid/9115 PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10982
ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000798
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html PatchVendor Advisory
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000277.html Patch
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 US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2003:109
http://www.novell.com/linux/security/advisories/2003_048_gpg.html
http://www.redhat.com/support/errata/RHSA-2003-390.html
http://www.redhat.com/support/errata/RHSA-2003-395.html
http://www.securityfocus.com/bid/9115 PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10982

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2006-6235Gnu privacy guard vulnerabilityA "stack overwrite" vulnerability in GnuPG (gpg) 1.x before 1.4.6, 2.x before 2.0.2, and 1.9.0 through 1.9.95 allows attackers to execute arbitrary c…EPSS 5.9%10.0CVE-2003-0255Gnu privacy guard vulnerabilityThe key validation code in GnuPG before 1.2.2 does not properly determine the validity of keys with multiple user IDs and assigns the greatest validi…EPSS 6.6%7.5CVE-2003-0978Gnu privacy guard vulnerabilityFormat string vulnerability in gpgkeys_hkp (experimental HKP interface) for the GnuPG (gpg) client 1.2.3 and earlier, and 1.3.3 and earlier, allows r…EPSS 2.8%7.5CVE-2001-0522Gnu privacy guard vulnerabilityFormat string vulnerability in Gnu Privacy Guard (aka GnuPG or gpg) 1.05 and earlier can allow an attacker to gain privileges via format strings in t…EPSS 14%7.5CVE-2000-0974Gnu privacy guard vulnerabilityGnuPG (gpg) 1.0.3 does not properly check all signatures of a file containing multiple documents, which allows an attacker to modify contents of all …EPSS 3.0%5.0CVE-2006-0049Gnu privacy guard vulnerabilitygpg in GnuPG before 1.4.2.2 does not properly verify non-detached signatures, which allows attackers to inject unsigned data via a data packet that i…EPSS 2.4%5.0CVE-2001-0072Gnu privacy guard vulnerabilitygpg (aka GnuPG) 1.0.4 and other versions imports both public and private keys from public key servers without notifying the user about the private ke…EPSS 2.0%4.6CVE-2006-0455Gnu privacy guard vulnerabilitygpgv in GnuPG before 1.4.2.1, when using unattended signature verification, returns a 0 exit code in certain cases even when the detached signature f…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2003-0971), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.