CVE-2017-1000115

Publication date 5 October 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can malicious repositories to modify files outside the repository

From the Ubuntu Security Team

It was discovered that Mercurial incorrectly handled symlinks. An attacker could possibly use this issue to insert, edit or obtain sensitive information.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mercurial	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Fixed 4.3.1-2
	17.04 zesty	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

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