CVE-2020-8244
Remote Memory Exposure in bl
6.5
MEDIUM
CVSS 3.1
EPSS 1.1%
Description
A buffer over-read vulnerability exists in bl <4.0.3, <3.0.1, <2.2.1, and <1.2.3 which could allow an attacker to supply user input (even typed) that if it ends up in consume() argument and can become negative, the BufferList state can be corrupted, tricking it into exposing uninitialized memory via regular .slice() calls.
How to fix CVE-2020-8244
To remediate CVE-2020-8244, upgrade the affected package to a fixed version below.
- —upgrade to 4.0.3-1 or later
- —upgrade to 1.1.2-1+deb9u1 or later
- —upgrade to 1.2.3 or later
Is CVE-2020-8244 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 4.0.3-1
- from 0, < 1.1.2-1+deb9u1
- from 0, < 1.2.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |