6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:P/A:P
0.011 Low
EPSS
Percentile
84.3%
Problem Description:
A flaw in the backwards-compatibility key exchange route allows a
pointer to be freed twice.
Impact:
A remote, unauthenticated attacker may be able to cause a denial of
service, or possibly remote code execution.
Note that FreeBSD 12.3 and FreeBSD 13.1 include older versions of
OpenSSH, and are not affected. FreeBSD 13.2-BETA1 and later include the
fix.
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:P/A:P
0.011 Low
EPSS
Percentile
84.3%