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CVE-2003-0147

UnknownEPSS 6.39%

Last modified

CVE-2003-0147 is a vulnerability of currently unknown severity. 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).. EPSS estimates a 6.39% chance of exploitation in the next 30 days.

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).

Metrics

EPSS Probability
6.39%

92.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
OpenpkgOpenpkgAll versions
OpenpkgOpenpkg1.1
OpenpkgOpenpkg1.2
OpensslOpenssl0.9.6
OpensslOpenssl0.9.6a
OpensslOpenssl0.9.6b
OpensslOpenssl0.9.6c
OpensslOpenssl0.9.6d
OpensslOpenssl0.9.6e
OpensslOpenssl0.9.6g
OpensslOpenssl0.9.6h
OpensslOpenssl0.9.6i
OpensslOpenssl0.9.7
OpensslOpenssl0.9.7a
StunnelStunnel3.7
StunnelStunnel3.8
StunnelStunnel3.9
StunnelStunnel3.10
StunnelStunnel3.11
StunnelStunnel3.12
StunnelStunnel3.13
StunnelStunnel3.14
StunnelStunnel3.15
StunnelStunnel3.16
StunnelStunnel3.17
StunnelStunnel3.18
StunnelStunnel3.19
StunnelStunnel3.20
StunnelStunnel3.21
StunnelStunnel3.22
StunnelStunnel4.0
StunnelStunnel4.01
StunnelStunnel4.02
StunnelStunnel4.03
StunnelStunnel4.04

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 of different integer multiplication algorithms ("Karatsuba" and normal).
How severe is CVE-2003-0147?
Severity scoring for CVE-2003-0147 is pending analysis. The EPSS model estimates a 6.39% probability of exploitation in the next 30 days.
How do I fix CVE-2003-0147?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0147?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST