Authentication Bypass by Primary Weakness Affecting libcurl-devel package, versions <0:8.0.1-1.amzn2.0.1


Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-AMZN2-LIBCURLDEVEL-5672015
  • published 8 Jun 2023
  • disclosed 30 Mar 2023

How to fix?

Upgrade Amazon-Linux:2 libcurl-devel to version 0:8.0.1-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2023-2070.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-devel package and not the libcurl-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.

CVSS Scores

version 3.1
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Snyk

5.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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NVD

5.5 medium
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SUSE

5.8 medium
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Red Hat

5.5 medium