CVE-2018-14337 Integer overflow in n/a

What is CVE-2018-14337?

CVE-2018-14337 is a high-severity vulnerability in Debian Debian Linux, published on 17 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The CHECK macro in mrbgems/mruby-sprintf/src/sprintf.c in mruby 1.4.1 contains a signed integer overflow, possibly leading to out-of-bounds memory access because the mrb_str_resize function in string.c does not check for a negative length.

Weakness: CWE-190

Which versions are affected by CVE-2018-14337?

It affects 2 products.

Products include Debian Debian Linux, Mruby Mruby.

How do I fix CVE-2018-14337?

Apply the vendor's patch.

Is CVE-2018-14337 being exploited?

There is no known exploitation of CVE-2018-14337 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-14337, GHSA-hrqc-789v-hchf, UBUNTU-CVE-2018-14337.