5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
58.4%
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.12-main | noarch | openssh | < 8.3_p1-r1 | UNKNOWN |
Alpine | 3.13-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.14-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.17-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.18-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
Alpine | 3.19-main | noarch | openssh | < 8.4_p1-r0 | UNKNOWN |
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
58.4%