Strix
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CVE-2011-1945

UnknownEPSS 3.43%

Last modified

CVE-2011-1945 is a vulnerability of currently unknown severity. The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.. EPSS estimates a 3.43% chance of exploitation in the next 30 days.

Description

The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.

Metrics

EPSS Probability
3.43%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpensslOpenssl<= 1.0.0d
OpensslOpenssl0.9.1c
OpensslOpenssl0.9.2b
OpensslOpenssl0.9.3
OpensslOpenssl0.9.3a
OpensslOpenssl0.9.4
OpensslOpenssl0.9.5
OpensslOpenssl0.9.5a
OpensslOpenssl0.9.6
OpensslOpenssl0.9.6a
OpensslOpenssl0.9.6b
OpensslOpenssl0.9.6c
OpensslOpenssl0.9.6d
OpensslOpenssl0.9.6e
OpensslOpenssl0.9.6f
OpensslOpenssl0.9.6g
OpensslOpenssl0.9.6h
OpensslOpenssl0.9.6i
OpensslOpenssl0.9.6j
OpensslOpenssl0.9.6k
OpensslOpenssl0.9.6l
OpensslOpenssl0.9.6m
OpensslOpenssl0.9.7
OpensslOpenssl0.9.7a
OpensslOpenssl0.9.7b
OpensslOpenssl0.9.7c
OpensslOpenssl0.9.7d
OpensslOpenssl0.9.7e
OpensslOpenssl0.9.7f
OpensslOpenssl0.9.7g
OpensslOpenssl0.9.7h
OpensslOpenssl0.9.7i
OpensslOpenssl0.9.7j
OpensslOpenssl0.9.7k
OpensslOpenssl0.9.7l
OpensslOpenssl0.9.7m
OpensslOpenssl0.9.8
OpensslOpenssl0.9.8a
OpensslOpenssl0.9.8b
OpensslOpenssl0.9.8c
OpensslOpenssl0.9.8d
OpensslOpenssl0.9.8e
OpensslOpenssl0.9.8f
OpensslOpenssl0.9.8g
OpensslOpenssl0.9.8h
OpensslOpenssl0.9.8i
OpensslOpenssl0.9.8j
OpensslOpenssl0.9.8k
OpensslOpenssl0.9.8l
OpensslOpenssl0.9.8m

Showing 50 of 57 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-1945?
The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.
How severe is CVE-2011-1945?
Severity scoring for CVE-2011-1945 is pending analysis. The EPSS model estimates a 3.43% probability of exploitation in the next 30 days.
How do I fix CVE-2011-1945?
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-2011-1945?

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

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Source: NVD / NIST