CVE-2016-3630

Publication date 13 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The binary delta decoder in Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a (1) clone, (2) push, or (3) pull command, related to (a) a list sizing rounding error and (b) short records.

From the Ubuntu Security Team

It was discovered that Mercurial incorrectly handled delta decoding. An attacker could possibly use this issue to execute arbitrary code.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mercurial	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Fixed 2.8.2-1ubuntu1.4
	12.04 LTS precise	Ignored end of life

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H