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osvGoogleOSV:GHSA-32GV-6CF3-WCMQ
HistoryMar 14, 2022 - 10:45 p.m.

HTTP/2 DoS Attacks: Ping, Reset, and Settings Floods

2022-03-1422:45:11
Google
osv.dev
60

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

0.154 Low

EPSS

Percentile

95.7%

Impact

Twisted web servers that utilize the optional HTTP/2 support suffer from the following flow-control related vulnerabilities:

Ping flood: https://vulners.com/cve/CVE-2019-9512
Reset flood: https://vulners.com/cve/CVE-2019-9514
Settings flood: https://vulners.com/cve/CVE-2019-9515

A Twisted web server supports HTTP/2 requests if you’ve installed the http2 optional dependency set.

Workarounds

There are no workarounds.

References

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md

For more information

If you have any questions or comments about this advisory:

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

0.154 Low

EPSS

Percentile

95.7%