5.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
0.974 High
EPSS
Percentile
99.9%
OpenSSL contains a flaw in the implementation of the Change Cipher Spec protocol that allows a MITM (man-in-the-middle) attacker to force a server and a client to use easily guessable cryptgraphic key material during the initial SSL/TLS handshake (CWE-325).
SSL/TLS communication between the server and the client can be decrypted or altered by the MITM attacker.
Update the software
Update to the latest version according to the information provided by the developer.
It is confirmed that the SSL/TLS communication between a server and a client using the following vulnerable OpenSSL versions is affected.
Server:
OpenSSL 1.0.1g and earlier
Client:
OpenSSL 1.0.1g and earlier
OpenSSL 1.0.0l and earlier
OpenSSL 0.9.8y and earlier
5.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
0.974 High
EPSS
Percentile
99.9%