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…
Does this matter?
Lower severity and a low EPSS score (3.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 2.6 LOWAV:N/AC:H/Au:N/C:P/I:N/A:N
- EPSS
- 3.29% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- openssl/openssl
- Source
- secalert@redhat.com
References
- http://eprint.iacr.org/2011/232.pdfExploit
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
- http://secunia.com/advisories/44935
- http://support.apple.com/kb/HT5784
- http://www.debian.org/security/2011/dsa-2309
- http://www.kb.cert.org/vuls/id/536044US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8FENZ3US Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:136
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:137
- https://hermes.opensuse.org/messages/8760466
- https://hermes.opensuse.org/messages/8764170
- http://eprint.iacr.org/2011/232.pdfExploit
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
- http://secunia.com/advisories/44935
- http://support.apple.com/kb/HT5784
- http://www.debian.org/security/2011/dsa-2309
- http://www.kb.cert.org/vuls/id/536044US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8FENZ3US Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:136
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:137
- https://hermes.opensuse.org/messages/8760466
- https://hermes.opensuse.org/messages/8764170
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.