mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c because of incorrect VM stack handling. It can be triggered via the stack_copy function.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c     because of incorrect VM stack handling. It can be triggered via the stack_copy function. (CVE-2020-15866)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c
    because of incorrect VM stack handling. It can be triggered via the stack_copy function. (CVE-2020-15866)

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2996 advisory.

    Brief introduction CVE-2017-9527 Description CVE-2018-10191 Description CVE-2018-11743 Description     CVE-2018-12249 Description CVE-2018-14337 Description CVE-2020-15866 Description For Debian 9 stretch,     these problems have been fixed in version 1.2.0+20161228+git30d5424a-1+deb9u1. We recommend that you     upgrade your mruby packages. For the detailed security status of mruby please refer to its security     tracker page at: https://security-tracker.debian.org/tracker/mruby Further information about Debian LTS     security advisories, how to apply these updates to your system and frequently asked questions can be found     at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
257184	Linux Distros Unpatched Vulnerability : CVE-2020-15866	Nessus	Misc.	critical
405638	Alpine: multiple mruby packages: security update to 2.1.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	critical
405638	Alpine: multiple mruby packages: security update to 2.1.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	critical
161327	Debian DLA-2996-1 : mruby - LTS security update	Nessus	Debian Local Security Checks	critical

Detections

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CVE-2020-15866

critical

Tenable Plugins

critical

critical

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