1. CVE-Search
  2. CVE-2020-10933
ID CVE-2020-10933
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:-:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:-:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:preview1:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:preview2:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:preview2:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:preview3:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:preview3:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.0:preview1:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.4:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.5:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.6:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.6:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.5.7:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.5.7:*:*:*:*:*:*:*
  • cpe:2.3:a:ruby-lang:ruby:2.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:ruby-lang:ruby:2.7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 03-05-2022 - 14:21)
Impact:
Exploitability:
CWE CWE-908
CAPEC
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:N/A:N
refmap via4
confirm
debian DSA-4721
fedora FEDORA-2020-a95706b117
Last major update 03-05-2022 - 14:21
Published 04-05-2020 - 15:15
Last modified 03-05-2022 - 14:21
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