VDB
CVE-2020-6838
CVE-2020-6838
PUBLISHED
CVSS 9.800000190734863 CRITICAL
In mruby 2.1.0, there is a use-after-free in hash_values_at in mrbgems/mruby-hash-ext/src/hash-ext.c.
EPSS 1.50% · 72.5th percentile
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.50%
72.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | mruby | 3.0.0-3, 3.0.0-1, 2.1.2-3 |
| Ubuntu:16.04:LTS | mruby | *, 0, 1.2.0+20160315+git4f20d58a-1 |
| Ubuntu:20.04:LTS | mruby | 2.0.0-1, 0 |
| Ubuntu:18.04:LTS | mruby | 1.4.0-1, *, 0 |
| Ubuntu:25.10 | mruby | 3.3.0-1, 0 |
| Ubuntu:24.04:LTS | mruby | 3.2.0-2, 0, 3.2.0-1 |
Timeline
- Jan 11, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
- Jan 9, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-6838 third-party-advisory
- https://github.com/mruby/mruby/issues/4926 third-party-advisory
- https://github.com/mruby/mruby/commit/fc8fb41451b07b3fda0726ba80e88e509ad02452 third-party-advisory
- https://github.com/mruby/mruby/commit/70e574689664c10ed2c47581999cc2ce3e3c5afb third-party-advisory
- https://github.com/mruby/mruby/commit/2742ded32fe18f88833d76b297f5c2170b6880c3 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-6838 third-party-advisory