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Fencer Vulns
medium 5.0

CVE-2003-0147 json

OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's private key by determining fac…

published 2003-03-18 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0143

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.1%
EPSS 7.1% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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).

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 0.9.7b-1

debian advisories DEBIAN-CVE-2003-0147

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2003-0147 updated

security flaw

  • Red Hat Enterprise Linux ES version 2.1 Red Hat Enterprise Linux WS version 2.1
    fixed: vendor fix RHSA-2003:102
  • Red Hat Linux 6.2 Red Hat Linux 7.0 Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3 Red Hat Linux 8.0
    +1 more products
    Red Hat Linux 9
    fixed: vendor fix RHSA-2003:101
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2003:102
  • Red Hat Stronghold 3
    fixed: vendor fix RHSA-2003:117
  • Red Hat Stronghold 4
    fixed: vendor fix RHSA-2003:116

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.06% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.