CVE-2021-4070

Name of the Vulnerable Software and Affected Versions v2fly/v2ray-core versions prior to 4.44.0

Description The issue is related to an off-by-one error in indexing operations on arrays, slices, or strings. This error occurs when the index is checked for being less than or equal to the length (<=), instead of less than the length (<), potentially leading to an out-of-bounds index.

Recommendations For versions prior to 4.44.0, update to version 4.44.0 or later to resolve the issue. As a temporary workaround, consider reviewing and adjusting indexing operations to ensure they use an index at most one less than the length.