What’s Vulnerable › Vulnerabilities

CVE-2018-11743

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-06-05 · updated 2026-06-17
• Weakness: CWE-824

Description

The init_copy function in kernel.c in mruby 1.4.1 makes initialize_copy calls for TT_ICLASS objects, which allows attackers to cause a denial of service (mrb_hash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.

Affected products

• Debian Linux: 9.0
• mruby/mruby: 1.4.1

References

• https://github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d
• https://github.com/mruby/mruby/issues/4027
• https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html
• https://github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d
• https://github.com/mruby/mruby/issues/4027
• https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html

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