FreeBSD05B7180B-E571-11EE-A1C0-0050569F0B83www/varnish7 -- Denial of Service
7.5 High
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
6.8 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
27.5%
The Varnish Development Team reports:
A denial of service attack can be performed on Varnish Cacher servers
that have the HTTP/2 protocol turned on. An attacker can let the
servers HTTP/2 connection control flow window run out of credits
indefinitely and prevent progress in the processing of streams,
retaining the associated resources.
Related
7.5 High
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
6.8 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
27.5%