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Red Hat: CVE-2020-10933: CVE-2020-10933 ruby: BasicSocket#read_nonblock method leads to information disclosure (Multiple Advisories)

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Red Hat: CVE-2020-10933: CVE-2020-10933 ruby: BasicSocket#read_nonblock method leads to information disclosure (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
05/04/2020
Created
06/30/2021
Added
06/30/2021
Modified
12/15/2023

Description

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.

Solution(s)

  • redhat-upgrade-ruby
  • redhat-upgrade-ruby-debuginfo
  • redhat-upgrade-ruby-debugsource
  • redhat-upgrade-ruby-devel
  • redhat-upgrade-ruby-doc
  • redhat-upgrade-ruby-irb
  • redhat-upgrade-ruby-libs
  • redhat-upgrade-ruby-libs-debuginfo
  • redhat-upgrade-rubygem-abrt
  • redhat-upgrade-rubygem-abrt-doc
  • redhat-upgrade-rubygem-bigdecimal
  • redhat-upgrade-rubygem-bigdecimal-debuginfo
  • redhat-upgrade-rubygem-bson
  • redhat-upgrade-rubygem-bson-debuginfo
  • redhat-upgrade-rubygem-bson-debugsource
  • redhat-upgrade-rubygem-bson-doc
  • redhat-upgrade-rubygem-bundler
  • redhat-upgrade-rubygem-bundler-doc
  • redhat-upgrade-rubygem-did_you_mean
  • redhat-upgrade-rubygem-io-console
  • redhat-upgrade-rubygem-io-console-debuginfo
  • redhat-upgrade-rubygem-irb
  • redhat-upgrade-rubygem-json
  • redhat-upgrade-rubygem-json-debuginfo
  • redhat-upgrade-rubygem-minitest
  • redhat-upgrade-rubygem-mongo
  • redhat-upgrade-rubygem-mongo-doc
  • redhat-upgrade-rubygem-mysql2
  • redhat-upgrade-rubygem-mysql2-debuginfo
  • redhat-upgrade-rubygem-mysql2-debugsource
  • redhat-upgrade-rubygem-mysql2-doc
  • redhat-upgrade-rubygem-net-telnet
  • redhat-upgrade-rubygem-openssl
  • redhat-upgrade-rubygem-openssl-debuginfo
  • redhat-upgrade-rubygem-pg
  • redhat-upgrade-rubygem-pg-debuginfo
  • redhat-upgrade-rubygem-pg-debugsource
  • redhat-upgrade-rubygem-pg-doc
  • redhat-upgrade-rubygem-power_assert
  • redhat-upgrade-rubygem-psych
  • redhat-upgrade-rubygem-psych-debuginfo
  • redhat-upgrade-rubygem-rake
  • redhat-upgrade-rubygem-rdoc
  • redhat-upgrade-rubygem-test-unit
  • redhat-upgrade-rubygem-xmlrpc
  • redhat-upgrade-rubygems
  • redhat-upgrade-rubygems-devel

References

  • DSA-4721
  • CVE-2020-10933
  • RHSA-2021:2587
  • RHSA-2021:2588
  • RHSA-2022:0582

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