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OpenSSL RSA silently downgrades to EXPORT_RSA [Client] (CVE-2015-0204)

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OpenSSL RSA silently downgrades to EXPORT_RSA [Client] (CVE-2015-0204)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
01/09/2015
Created
07/25/2018
Added
01/09/2015
Modified
01/04/2017

Description

The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role, related to the "FREAK" issue. NOTE: the scope of this CVE is only client code based on OpenSSL, not EXPORT_RSA issues associated with servers or other TLS implementations.

Solution(s)

  • http-openssl-0_9_8-upgrade-0_9_8_z_d
  • http-openssl-1_0_0-upgrade-1_0_0_p
  • http-openssl-1_0_1-upgrade-1_0_1_k

References

  • http-openssl-0_9_8-upgrade-0_9_8_z_d
  • http-openssl-1_0_0-upgrade-1_0_0_p
  • http-openssl-1_0_1-upgrade-1_0_1_k

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