CVE-2018-13347

Publication date 6 July 2018

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction, aka OVE-20180430-0002.

From the Ubuntu Security Team

It wa discovered that Mercurial incorrectly handled integer addition and subtraction. An attacker could possibly use this issue to cause a denial of service or other unspecified impact.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mercurial	18.10 cosmic	Not affected
	18.04 LTS bionic	Fixed 4.5.3-1ubuntu2.1
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Fixed 3.7.3-1ubuntu1.1
	14.04 LTS trusty	Fixed 2.8.2-1ubuntu1.4

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H