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Allocation of Resources Without Limits or Throttling Affecting kube-fluentd-operator package, versions <1.17.6-r8

Severity

 Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.42% (75th percentile)

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  • Snyk ID SNYK-WOLFILATEST-KUBEFLUENTDOPERATOR-5969208
  • published 12 Oct 2023
  • disclosed 11 Oct 2023
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Introduced: 11 Oct 2023

CVE-2023-39325 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade Wolfi kube-fluentd-operator to version 1.17.6-r8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kube-fluentd-operator package and not the kube-fluentd-operator package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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NVD

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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SUSE

7.5 high
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Red Hat

7.5 high