CVE-2018-19486

git: Improper handling of PATH allows for commands to be executed from the current directory

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Git before 2.19.2 on Linux and UNIX executes commands from the current working directory (as if '.' were at the end of $PATH) in certain cases involving the run_command() API and run-command.c, because there was a dangerous change from execvp to execv during 2017.

Git, en versiones anteriores a la 2.19.2 en Linux y UNIX, ejecuta comandos desde el directorio de trabajo actual (como si '.' estuviera al final de $PATH) en determinados casos relacionados con la API run_command() y run-command.c, debido a un cambio peligroso desde execvp hasta execv en el 2017.

It was discovered that Git incorrectly handled layers of tree objects. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. It was discovered that Git incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-11-23 CVE Reserved
2018-11-23 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-426: Untrusted Search Path

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/106020	Third Party Advisory
http://www.securitytracker.com/id/1042166	Third Party Advisory
https://git.kernel.org/pub/scm/git/git.git/tree/Documentation/RelNotes/2.19.2.txt	Release Notes

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/git/git.git/commit/?id=321fd82389742398d2924640ce3a61791fd27d60	2019-04-11

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:3800	2019-04-11
https://security.gentoo.org/glsa/201904-13	2019-04-11
https://usn.ubuntu.com/3829-1	2019-04-11
https://access.redhat.com/security/cve/CVE-2018-19486	2018-12-10
https://bugzilla.redhat.com/show_bug.cgi?id=1653143	2018-12-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Git-scm Search vendor "Git-scm"	Git Search vendor "Git-scm" for product "Git"	< 2.19.2 Search vendor "Git-scm" for product "Git" and version " < 2.19.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected