CVE-2020-10933

Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 04 May 2020, 14:54
Last modified:04 Aug 2024, 11:21

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
5.3 MEDIUM
v3.1 (nvd)
EPSS Score
0.41% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

04 May 2020, 14:54
Published
Vulnerability first disclosed
04 Aug 2024, 11:21
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.41%• Percentile: 62%

Techniques & Countermeasures

  • CWE-908•Use of Uninitialized Resource

    The product uses or accesses a resource that has not been initialized.

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    31

  • ruby-lang•ruby

    ≥ 2.5.0, ≤ 2.5.7 | ≥ 2.6.0, ≤ 2.6.5 | 2.7.0

References (4)