Information Exposure Affecting ruby package, versions <2.6.6-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.73% (81st percentile)

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  • Snyk IDSNYK-ALPINE312-RUBY-587752
  • published21 Jul 2020
  • disclosed4 May 2020

Introduced: 4 May 2020

CVE-2020-10933  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Alpine:3.12 ruby to version 2.6.6-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:3.12 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.

CVSS Scores

version 3.1