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CVE-2018-12115

Published: 21 August 2018

In all versions of Node.js prior to 6.14.4, 8.11.4 and 10.9.0 when used with UCS-2 encoding (recognized by Node.js under the names `'ucs2'`, `'ucs-2'`, `'utf16le'` and `'utf-16le'`), `Buffer#write()` can be abused to write outside of the bounds of a single `Buffer`. Writes that start from the second-to-last position of a buffer cause a miscalculation of the maximum length of the input bytes to be written.

From the Ubuntu Security Team

Nikita Skovoroda discovered that Node.js mishandled certain input, leading to an out of bounds write. An attacker could use this vulnerability to cause a denial of service (crash) or possibly execute arbitrary code.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
nodejs
Launchpad, Ubuntu, Debian
bionic
Released (8.10.0~dfsg-2ubuntu0.4+esm1)
Available with Ubuntu Pro
cosmic Not vulnerable
(8.11.4~dfsg-0ubuntu1)
disco Not vulnerable
(8.11.4~dfsg-0ubuntu1)
eoan Not vulnerable
(8.11.4~dfsg-0ubuntu1)
focal Not vulnerable
(8.11.4~dfsg-0ubuntu1)
groovy Not vulnerable
(8.11.4~dfsg-0ubuntu1)
hirsute Not vulnerable
(8.11.4~dfsg-0ubuntu1)
impish Not vulnerable
(8.11.4~dfsg-0ubuntu1)
jammy Not vulnerable
(8.11.4~dfsg-0ubuntu1)
kinetic Not vulnerable
(8.11.4~dfsg-0ubuntu1)
lunar Not vulnerable
(8.11.4~dfsg-0ubuntu1)
mantic Not vulnerable
(8.11.4~dfsg-0ubuntu1)
trusty Needed

upstream
Released (6.14.4, 8.11.4, 10.9.0)
xenial Needed

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H