CVE-2003-0147
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain...
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
Exploit likelihood
What each source reports
NVD Score used
5.0
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
CVE-2003-0147- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Updated
- 2026-11-02
CVE List No score
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
CVE-2003-0147- Updated
- 2026-11-02
EUVDEUVD-2003-0143 No score
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
EUVD-2003-0143- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4q57-g9fh-w67x No score
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain...
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
GHSA-4q57-g9fh-w67x- Updated
- 2026-11-02
OSV No score
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
CVE-2003-0147- Updated
- 2026-11-02
OSVDEBIAN-CVE-2003-0147 No score
OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms ("Karatsuba" and normal).
- Record
DEBIAN-CVE-2003-0147- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2003-0147 is a medium vulnerability (CVSS 5.0) in Openssl, published March 18, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.06%, the 94th percentile. Fixed in openssl 0.9.7b-1.
References
debian.org/security/2003/dsa-288
redhat.com/support/errata/RHSA-2003-101.html
redhat.com/support/errata/RHSA-2003-102.html
openssl.org/news/secadv_20030317.txt
marc.info?l=bugtraq&m=104829040921835&w=2
securityfocus.com/archive/1/316165/30/25370/threaded
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marc.info?l=bugtraq&m=104792570615648&w=2
mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:035
crypto.stanford.edu/~dabo/papers/ssl-timing.pdf
gentoo.org/security/en/glsa/glsa-200303-23.xml
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A466
openpkg.com/security/advisories/OpenPKG-SA-2003.019.html
marc.info?l=bugtraq&m=104861762028637&w=2
securityfocus.com/archive/1/316577/30/25310/threaded
marc.info?l=bugtraq&m=104766550528628&w=2
marc.info?l=bugtraq&m=104819602408063&w=2
distro.conectiva.com.br/atualizacoes?id=a&anuncio=000625
kb.cert.org/vuls/id/997481
archives.neohapsis.com/archives/vulnwatch/2003-q1/0130.html
nvd.nist.gov/vuln/detail/CVE-2003-0147
github.com/advisories/GHSA-4q57-g9fh-w67x
security-tracker.debian.org/tracker/CVE-2003-0147