CVE-2020-10933
Public on 2020-05-04
Modified on 2024-02-07
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.
Ruby shipped in the HAQM Linux 2 core repository is not affected by this issue.
Ruby shipped in the HAQM Linux 2 core repository is not affected by this issue.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| HAQM Linux 1 | ruby | Not Affected | ||
| HAQM Linux 2 - Core | ruby | Not Affected | ||
| HAQM Linux 2 - Ruby2.6 Extra | ruby | 2023-08-21 | ALAS2RUBY2.6-2023-007 | Fixed |
| HAQM Linux 1 | ruby20 | Not Affected | ||
| HAQM Linux 2023 | ruby3.2 | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| HAQM Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | CVSSv2 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| NVD | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |