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CVE-2020-8252

Published: 18 September 2020

The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.

Notes

AuthorNote
sbeattie
nodejs uses system libuv1 library
mdeslaur
introduced in 1.24.0

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
libuv1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(1.18.0-3)
focal
Released (1.34.2-1ubuntu1.1)
trusty Does not exist

upstream
Released (1.39.0-1)
xenial Not vulnerable
(1.8.0-1)
Patches:
upstream: https://github.com/libuv/libuv/commit/0e6e8620496dff0eb285589ef1e37a7f407f3ddd

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H