Vulnerability in Mruby
CVE-2018-11743
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Mruby — versions 1.4.1
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d (Patch, Third Party Advisory)
- github.com/mruby/mruby/issues/4027 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2022/05/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-11743?
- CVE-2018-11743 is a critical-severity vulnerability in Mruby, classified under Access of Uninitialized Pointer. CVSS score: 9.8/10. Published 2018-06-05.
- How severe is CVE-2018-11743?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-11743 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.