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
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.097 Low
EPSS
Percentile
94.7%
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | nghttp2 | < 1.39.2-r0 | UNKNOWN |
Alpine | edge-main | noarch | nginx | < 1.16.1-r0 | UNKNOWN |
Alpine | edge-main | noarch | nodejs | < 10.16.3-r0 | UNKNOWN |
Alpine | 3.10-main | noarch | nghttp2 | < 1.39.2-r0 | UNKNOWN |
Alpine | 3.10-main | noarch | nginx | < 1.16.1-r0 | UNKNOWN |
Alpine | 3.10-main | noarch | nodejs | < 10.16.3-r0 | UNKNOWN |
Alpine | 3.11-main | noarch | nghttp2 | < 1.39.2-r0 | UNKNOWN |
Alpine | 3.11-main | noarch | nginx | < 1.16.1-r0 | UNKNOWN |
Alpine | 3.11-main | noarch | nodejs | < 10.16.3-r0 | UNKNOWN |
Alpine | 3.12-main | noarch | nghttp2 | < 1.39.2-r0 | UNKNOWN |
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
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.097 Low
EPSS
Percentile
94.7%