CVE-2022-1276 : Out-of-bounds Read in mrb_get_args in GitHub repository mruby/mruby prior to 3.2

Out-of-bounds Read in mrb_get_args in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

Published 2022-04-10 10:15:08

Updated 2022-04-15 20:04:30

Source huntr.dev

View at NVD, CVE.org

Products affected by CVE-2022-1276

Mruby » Mruby
Versions before (<) 3.2
cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.27%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 68 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.4	HIGH	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	2.5	5.9	huntr.dev
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Assigned by: security@huntr.dev (Primary)

https://github.com/mruby/mruby/commit/c8c083cb750606b2da81582cd8e43b442bb143e6

codegen.c: need to pack argument when `n==13` too. · mruby/mruby@c8c083c · GitHub
Patch;Third Party Advisory
https://huntr.dev/bounties/6ea041d1-e2aa-472c-bf3e-da5fa8726c25

Out-of-bounds Read in mrb_get_args vulnerability found in mruby
Exploit;Third Party Advisory

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