CVE catalog
CVE-2020-8244
node-bl: CVE-2020-8244
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.10% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-bl | sid | 5.1.0-4 | fixed |
| Debian | node-bl | forky | 5.1.0-4 | fixed |
| Debian | node-bl | trixie | 5.1.0-1 | fixed |
| Debian | node-bl | bookworm | 5.1.0-1 | fixed |
| Npm | bl | Not reported | 1.2.3 | fixed |
| Npm | bl | Not reported | 2.2.1 | fixed |
| Npm | bl | Not reported | 3.0.1 | fixed |
| Npm | bl | Not reported | 4.0.3 | fixed |
| Ubuntu | node-bl | pro | 0.9.3-1 | vulnerable |
| Ubuntu | node-bl | pro | 0.9.3-1ubuntu0.1~esm1 | fixed |
| Ubuntu | node-bl | 18.04 | 1.1.2-1 | vulnerable |
| Ubuntu | node-bl | 18.04 | 1.1.2-1ubuntu1 | vulnerable |
| Ubuntu | node-bl | 18.04 | 1.1.2-1ubuntu1.1 | fixed |
| Ubuntu | node-bl | pro | 0.9.3-1 | vulnerable |
| Ubuntu | node-bl | pro | 0.9.3-1ubuntu0.1~esm1 | fixed |
| Ubuntu | node-bl | 18.04 | 1.1.2-1 | vulnerable |
| Ubuntu | node-bl | 18.04 | 1.1.2-1ubuntu1 | vulnerable |
| Ubuntu | node-bl | 18.04 | 1.1.2-1ubuntu1.1 | fixed |
| Ubuntu | node-bl | 20.04 | 1.1.2-3 | vulnerable |
| Ubuntu | node-bl | 20.04 | 4.0.0-2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-bl | source | sid | 4.0.3-1 | not yet assigned | Not reported | [969309] |
| Debian | node-bl | source | forky | 4.0.3-1 | not yet assigned | Not reported | [969309] |
| Debian | node-bl | source | trixie | 4.0.3-1 | not yet assigned | Not reported | [969309] |
| Debian | node-bl | source | bookworm | 4.0.3-1 | not yet assigned | Not reported | [969309] |
| Npm | bl | npm | Not reported | 1.2.3 | Not reported | Not reported | Not reported |
| Npm | bl | npm | Not reported | 2.2.1 | Not reported | Not reported | Not reported |
| Npm | bl | npm | Not reported | 3.0.1 | Not reported | Not reported | Not reported |
| Npm | bl | npm | Not reported | 4.0.3 | Not reported | Not reported | Not reported |
| Ubuntu | node-bl | deb | pro | 0.9.3-1ubuntu0.1~esm1 | Not reported | USN-5159-1 | Not reported |
| Ubuntu | node-bl | deb | 18.04 | 1.1.2-1ubuntu1.1 | Not reported | USN-5098-1 | Not reported |
| Ubuntu | node-bl | deb | pro | 0.9.3-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2020-8244 | Not reported |
| Ubuntu | node-bl | deb | 18.04 | 1.1.2-1ubuntu1.1 | Not reported | UBUNTU-CVE-2020-8244 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [node-bl]Fixed
Details (2)
5.1.0-1· all · bookwormFixed · Fixed:
4.0.3-1dsa · node-bl · debian · bookworm; dsa · node-bl · debian · 12
5.1.0-1· all · bookwormFixed · Fixed:
4.0.3-1dsa · node-bl · debian · bookworm; dsa · node-bl · debian · 12
[Debian 13 (Trixie)]
- [node-bl]Fixed
Details (2)
5.1.0-1· all · trixieFixed · Fixed:
4.0.3-1dsa · node-bl · debian · 13
5.1.0-1· all · trixieFixed · Fixed:
4.0.3-1dsa · node-bl · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-8244]
- [https://osv.dev/vulnerability/DLA-2698-1]
- [https://osv.dev/vulnerability/GHSA-pp7h-53gx-mx7r]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-8244]
- [https://osv.dev/vulnerability/USN-5098-1]
- [https://osv.dev/vulnerability/USN-5159-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-8244]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8244.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-1599.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]