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Information Exposure Affecting ruby2.5 package, versions <2.5.5-3+deb10u2

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-DEBIAN10-RUBY25-568621
  • published 7 May 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 Debian:10 ruby2.5 to version 2.5.5-3+deb10u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Debian. See How to fix? for Debian:10 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.