CVE-2020-10933

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.

Red Hat CloudForms 5 has stopped shipping Ruby and 4.7 ships Ruby 2.4 series, hence not vulnerable to the flaw. Red Hat Enterprise Linux versions prior than 8 ships ruby 2.0 or older releases, hence not vulnerable to the flaw.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.