CVE-2003-0147
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…
Does this matter?
Lower severity and a low EPSS score (7.06%). Track it; it rarely justifies an emergency change on its own.
Description
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).
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
- EPSS
- 7.06% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- openpkg/openpkg · openssl/openssl · stunnel/stunnel
- Source
- cve@mitre.org
EPSS 7.1% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-014.0.txt
- ftp://patches.sgi.com/support/free/security/advisories/20030501-01-I
- http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0130.htmlVendor Advisory
- http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000625
- http://marc.info/?l=bugtraq&m=104766550528628&w=2
- http://marc.info/?l=bugtraq&m=104792570615648&w=2
- http://marc.info/?l=bugtraq&m=104819602408063&w=2
- http://marc.info/?l=bugtraq&m=104829040921835&w=2
- http://marc.info/?l=bugtraq&m=104861762028637&w=2
- http://www.debian.org/security/2003/dsa-288
- http://www.gentoo.org/security/en/glsa/glsa-200303-23.xml
- http://www.kb.cert.org/vuls/id/997481Third Party Advisory, US Government Resource
- http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:035
- http://www.openpkg.com/security/advisories/OpenPKG-SA-2003.019.html
- http://www.openssl.org/news/secadv_20030317.txt
- http://www.redhat.com/support/errata/RHSA-2003-101.html
- http://www.redhat.com/support/errata/RHSA-2003-102.html
- http://www.securityfocus.com/archive/1/316165/30/25370/threaded
- http://www.securityfocus.com/archive/1/316165/30/25370/threaded
- http://www.securityfocus.com/archive/1/316165/30/25370/threaded
- http://www.securityfocus.com/archive/1/316165/30/25370/threaded
- http://www.securityfocus.com/archive/1/316577/30/25310/threaded
- http://www.securityfocus.com/archive/1/316577/30/25310/threaded
- http://www.securityfocus.com/archive/1/316577/30/25310/threaded
- http://www.securityfocus.com/archive/1/316577/30/25310/threaded
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A466
- ftp://ftp.sco.com/pub/security/OpenLinux/CSSA-2003-014.0.txt
- ftp://patches.sgi.com/support/free/security/advisories/20030501-01-I
- http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0130.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.