CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
82.1%
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in
TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages,
causing a denial of service for servers compiled with the NSS library. The
highest threat from this vulnerability is to system availability. This flaw
affects NSS versions before 3.58.
Author | Note |
---|---|
leosilva | From SUSE and Rhel: This issue affects servers which are compiled against the NSS library. Other consumers of NSS like firefox etc are not affected by this flaw. |
eslerm | CCS handling introduced after 3.28.4 with revision c3eba3a9483abede4c35fa92b5c950a35cd9b639 and others |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
82.1%