Vulnerability · Published Jan 11, 2020 · Assigned by mitre
CVE-2020-6839
Critical 9.8
In plain English
A critical-severity security flaw in the mruby package (Ubuntu). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.4%top 28.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In mruby 2.1.0, there is a stack-based buffer overflow in mrb_str_len_to_dbl in string.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | mruby | no fix listed | UBUNTU-CVE-2020-6839 |
| Ubuntu:24.04:LTS | mruby | no fix listed | UBUNTU-CVE-2020-6839 |
| Ubuntu:25.10 | mruby | no fix listed | UBUNTU-CVE-2020-6839 |
| Ubuntu:26.04:LTS | mruby | no fix listed | UBUNTU-CVE-2020-6839 |
| Ubuntu:26.10 | mruby | no fix listed | UBUNTU-CVE-2020-6839 |
Affected products (as reported)
References
- https://github.com/mruby/mruby/issues/4929 x_refsource_MISC