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CVE-2020-10933

CVSS v3.1 5.3 (Medium)
53% Progress
CVSS v2.0 5 (Medium)
50% Progress
EPSS 0.65 % (80th)
0.65% Progress
Affected Products 4
Advisories 15
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-908
Use of Uninitialized Resource
CVE Status
PUBLISHED
CNA
MITRE
Published Date
2020-05-04 15:15:13
(4 years ago)
Updated Date
2023-11-07 03:14:25
(10 months ago)

Affected Products

Debian

Fedoraproject

Linux

Ruby-lang

Configuration #1

AND
    CPE23 From Up To
OR  
  Ruby-lang Ruby from 2.5.0 version and 2.5.7 and prior versions cpe:2.3:a:ruby-lang:ruby >= 2.5.0 <= 2.5.7
OR  
  Running on/with
  Ruby-lang Ruby from 2.6.0 version and 2.6.5 and prior versions cpe:2.3:a:ruby-lang:ruby >= 2.6.0 <= 2.6.5
OR  
  Running on/with
  Ruby-lang Ruby 2.7.0 cpe:2.3:a:ruby-lang:ruby:2.7.0
OR  
  Running on/with
  Linux Kernel cpe:2.3:o:linux:linux_kernel:-

Configuration #2

    CPE23 From Up To
  Fedoraproject Fedora 31 cpe:2.3:o:fedoraproject:fedora:31

Configuration #3

    CPE23 From Up To
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0