CVE-2018-1000021

Publication date 9 February 2018

Last updated 17 February 2025

Ubuntu priority

Cvss 3 Severity Score

GIT version 2.15.1 and earlier contains a Input Validation Error vulnerability in Client that can result in problems including messing up terminal configuration to RCE. This attack appear to be exploitable via The user must interact with a malicious git server, (or have their traffic modified in a MITM attack).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
git	24.10 oracular	Ignored
	24.04 LTS noble	Ignored
	23.10 mantic	Ignored end of life, was needed
	23.04 lunar	Ignored end of life, was needed
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Ignored
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Ignored
	19.10 eoan	Ignored end of life
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Ignored
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Ignored will not fix
	14.04 LTS trusty	Not in release

Notes

mdeslaur

This is really an issue with terminal emulators that allow executing arbitrary code by displaying ANSI escape sequences. Terminal emulators in Ubuntu do not allow executing arbitrary code, so this issue is moot. It is unlikely that git will ever fix this CVE to protect against vulnerable terminal emulators. As of 2025-02-17, this issue has never been fixed in git, and is unlikely to ever be, marking as ignored in Ubuntu.

Severity score breakdown

Parameter	Value
Base score	5.0 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L