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Allocation of Resources Without Limits or Throttling Affecting toolbox-tests package, versions <0:0.0.99.3-10.el9_2

Severity

 Recommended
medium

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.42% (75th percentile)

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  • Snyk ID SNYK-ALMALINUX9-TOOLBOXTESTS-6036043
  • published 17 Oct 2023
  • disclosed 24 Oct 2023
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Introduced: 17 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 AlmaLinux:9 toolbox-tests to version 0:0.0.99.3-10.el9_2 or higher.
This issue was patched in ALSA-2023:6077.

NVD Description

Note: Versions mentioned in the description apply only to the upstream toolbox-tests package and not the toolbox-tests package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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
Expand this section

NVD

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
Expand this section

SUSE

7.5 high
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Red Hat

7.5 high