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githubGitHub Advisory DatabaseGHSA-4374-P667-P6C8
HistoryOct 11, 2023 - 8:35 p.m.

HTTP/2 rapid reset can cause excessive work in net/http

2023-10-1120:35:43
CWE-400
CWE-770
GitHub Advisory Database
github.com
27
http/2
rapid reset
excessive work
net/http
server resource consumption
fix
executing handler goroutines
stream concurrency limit
requests
connection
golang.org/x/net/http2
configure server.

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

7.7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.002 Low

EPSS

Percentile

59.0%

JSON

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing.

With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection.

This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2.

The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function.

CPENameOperatorVersion
golang.org/x/netlt0.17.0

References

Related

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rocky 3
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osv
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BIT-2023-39325
2023-11-01 07:18:25
BIT-golang-2023-39325
2024-03-06 10:53:35
HTTP/2 rapid reset can cause excessive work in net/http
2023-10-11 20:35:43
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oraclelinux
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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

7.7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.002 Low

EPSS

Percentile

59.0%

JSON
Related for GHSA-4374-P667-P6C8
nessus63osv5openvas30cbl_mariner25fedora30redhat24amazon4alpinelinux1prion1cgr1debiancve1wolfi1veracode1ibm4ubuntucve1cve1rocky3oraclelinux3