Out-of-bounds read in mruby - CVE-2018-12248
Published: June 12, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU37058
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-12248
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: mruby
Affected software:
mruby
mruby
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber. A remote attacker can perform a denial of service attack.
How to mitigate CVE-2018-12248
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.