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CVE-2011-1945

2.6 · LOW

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 properl…

Published May 31, 2011opensslCWE-310EPSS 3.29%

Overview

CVE-2011-1945 is a low-severity vulnerability affecting openssl openssl. It was published on May 31, 2011 and has a CVSS 2.0 base score of 2.6 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from openssl. Update openssl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
opensslopenssl0Affected

References

Refeprint.iacr.org/2011/232.pdfReflists.apple.com/archives/security-announce/2013/Jun/msg00000.htmlRefsecunia.com/advisories/44935Refsupport.apple.com/kb/HT5784Refwww.debian.org/security/2011/dsa-2309Refwww.kb.cert.org/vuls/id/536044Refwww.kb.cert.org/vuls/id/MAPG-8FENZ3Refwww.mandriva.com/security/advisories?name=MDVSA-2011:136Refwww.mandriva.com/security/advisories?name=MDVSA-2011:137Refhermes.opensuse.org/messages/8760466

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1945?

CVE-2011-1945 is a low-severity vulnerability affecting openssl openssl. It was published on May 31, 2011 and has a CVSS 2.0 base score of 2.6 (LOW).

How severe is CVE-2011-1945?

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1945?

Check the references section for vendor advisories and patches from openssl. Update openssl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1945?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1945 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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