CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:LCVE-2020-8244
Medium (6.5). EPSS 2.1% chance of exploitation in the next 30 days. Fixed in bl 1.2.3, 2.2.1, 3.0.1.
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.
Severity
- EPSS
- 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-125, CWE-126
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bufferlist_project:bufferlist
- debian:debian_linux
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-pp7h-53gx-mx7r | npm | bl | <1.2.3 | 1.2.3 |
| GHSA-pp7h-53gx-mx7r | npm | bl | >=2.0.0 <2.2.1 | 2.2.1 |
| GHSA-pp7h-53gx-mx7r | npm | bl | >=3.0.0 <3.0.1 | 3.0.1 |
| GHSA-pp7h-53gx-mx7r | npm | bl | >=4.0.0 <4.0.3 | 4.0.3 |