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.
| Reporter | Title | Published | Views | Family All 130 |
|---|---|---|---|---|
 | Amazon Linux 2 : ruby (ALASRUBY2.6-2023-007) | 27 Sep 202300:00 | – | nessus |
| AlmaLinux 8 : ruby:2.6 (ALSA-2021:2588) | 7 Aug 202300:00 | – | nessus |
| CentOS 8 : ruby:2.5 (CESA-2021:2587) | 29 Jun 202100:00 | – | nessus |
| CentOS 8 : ruby:2.6 (CESA-2021:2588) | 29 Jun 202100:00 | – | nessus |
| Debian DSA-4721-1 : ruby2.5 - security update | 9 Jul 202000:00 | – | nessus |
| EulerOS 2.0 SP8 : ruby (EulerOS-SA-2020-1590) | 26 May 202000:00 | – | nessus |
| EulerOS Virtualization for ARM 64 3.0.6.0 : ruby (EulerOS-SA-2020-1691) | 25 Jun 202000:00 | – | nessus |
| Fedora 31 : ruby (2020-a95706b117) | 22 May 202000:00 | – | nessus |
| MiracleLinux 7 : rh-ruby25-ruby-2.5.9-9.el7 (AXSA:2021-1762:01) | 20 Jan 202600:00 | – | nessus |
| MiracleLinux 7 : rh-ruby26-ruby-2.6.7-119.el7 (AXSA:2021-1768:01) | 20 Jan 202600:00 | – | nessus |
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25 Sep 2020 07:00Current
7High risk
Vulners AI Score7
CVSS 25
CVSS 3.15.3
EPSS0.02564