PT-2018-12452 · Mruby · Mruby

Cornelius Aschermann + 2 · Published 2018-07-17 · Updated 2022-05-12 · CVE-2018-14337

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions mruby version 1.4.1

Description The issue concerns a signed integer overflow in the CHECK macro within the mrbgems/mruby-sprintf/src/sprintf.c file of mruby. This overflow could potentially lead to out-of-bounds memory access due to the mrb str resize function in string.c not checking for negative lengths.

Recommendations For mruby version 1.4.1, consider applying a patch or fix that addresses the signed integer overflow in the CHECK macro to prevent potential out-of-bounds memory access. As a temporary workaround, restrict the use of the mrb str resize function to minimize the risk of exploitation.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2018-14337

DLA-2996-1

Affected Products

Mruby

References · 26

• 🔥 https://github.com/mruby/mruby/issues/4062 · Exploit
• https://ubuntu.com/security/CVE-2018-14337 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/mruby · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12249 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10191 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11743 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9527 · Security Note
• https://security-tracker.debian.org/tracker/DLA-2996-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-14337 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15866 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14337 · Security Note
• https://osv.dev/vulnerability/DLA-2996-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14337 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-14337 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-14337 · Vendor Advisory