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nvd[email protected]NVD:CVE-2023-39325
HistoryOct 11, 2023 - 10:15 p.m.

CVE-2023-39325

2023-10-1122:15:09
CWE-770
web.nvd.nist.gov
http/2
server resource consumption
maxconcurrentstreams
handler goroutines
request queue

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

0.002 Low

EPSS

Percentile

59.1%

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.

Affected configurations

NVD
Node
golanggoRange1.20.01.20.10
OR
golanggoRange1.21.01.21.3
OR
golanghttp2Range<0.17.0go
Node
fedoraprojectfedoraMatch37
OR
fedoraprojectfedoraMatch38
OR
fedoraprojectfedoraMatch39
Node
netappastra_tridentMatch-
OR
netappastra_trident_autosupportMatch-

References

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

0.002 Low

EPSS

Percentile

59.1%