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Information Exposure Affecting ruby package, versions <2.5.8-r0

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.65% (80th percentile)
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NVD
5.3 medium
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SUSE
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-ALPINE38-RUBY-598550
  • published 21 Jul 2020
  • disclosed 4 May 2020
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Introduced: 4 May 2020

CVE-2020-10933 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Alpine:3.8 ruby to version 2.5.8-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby package and not the ruby package as distributed by Alpine. See How to fix? for Alpine:3.8 relevant fixed versions and status.

An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter.