HTTP Request Smuggling Affecting ruby2.5-rubygem-puma package, versions <4.3.12-150000.3.12.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating

    Threat Intelligence

    EPSS
    0.29% (70th percentile)

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  • Snyk ID SNYK-SLES152-RUBY25RUBYGEMPUMA-5932746
  • published 5 Oct 2023
  • disclosed 4 Oct 2023

How to fix?

Upgrade SLES:15.2 ruby2.5-rubygem-puma to version 4.3.12-150000.3.12.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5-rubygem-puma package and not the ruby2.5-rubygem-puma package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

Puma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Scores

version 3.1
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NVD

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

7.3 high
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Red Hat

7.3 high