Remote Memory Exposure in bl
Moderate severity
GitHub Reviewed
Published
Sep 2, 2020
to the GitHub Advisory Database
•
Updated Feb 1, 2023
Package
Affected versions
= 3.0.0
>= 4.0.0, < 4.0.3
< 1.2.3
>= 2.0.0, < 2.2.1
Patched versions
3.0.1
4.0.3
1.2.3
2.2.1
Description
Published by the National Vulnerability Database
Aug 30, 2020
Reviewed
Sep 2, 2020
Published to the GitHub Advisory Database
Sep 2, 2020
Last updated
Feb 1, 2023
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.
References