CVE-2017-8386

git: Escape out of git-shell

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

git-shell in git before 2.4.12, 2.5.x before 2.5.6, 2.6.x before 2.6.7, 2.7.x before 2.7.5, 2.8.x before 2.8.5, 2.9.x before 2.9.4, 2.10.x before 2.10.3, 2.11.x before 2.11.2, and 2.12.x before 2.12.3 might allow remote authenticated users to gain privileges via a repository name that starts with a - (dash) character.

git-shell en git en versiones anteriores a la 2.4.12, versiones 2.5.x anteriores a la 2.5.6, versiones 2.6.x anteriores a la 2.6.7, versiones 2.7.x anteriores a la 2.7.5, versiones 2.8.x anteriores a la 2.8.5, versiones 2.9.x anteriores a la 2.9.4, versiones 2.10.x anteriores a la 2.10.3, versiones 2.11.x anteriores a la 2.11.2 y versiones 2.12.x anteriores a la 2.12.3 podría permitir que usuarios remotos autenticados obtengan privilegios mediante un nombre de repositorio que comienza con un carácter - (guion).

A flaw was found in the way git-shell handled command-line options for the restricted set of git-shell commands. A remote, authenticated attacker could use this flaw to bypass git-shell restrictions, to view and manipulate files, by abusing the instance of the less command launched using crafted command-line options.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-05-01 CVE Reserved
2017-05-10 CVE Published
2023-11-08 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (16)

URL	Tag	Source
http://public-inbox.org/git/xmqq8tm5ziat.fsf%40gitster.mtv.corp.google.com	Mailing List
http://www.securityfocus.com/bid/98409	Third Party Advisory
http://www.securitytracker.com/id/1038479	Third Party Advisory
https://insinuator.net/2017/05/git-shell-bypass-by-abusing-less-cve-2017-8386	Mitigation
https://kernel.googlesource.com/pub/scm/git/git/+/3ec804490a265f4c418a321428c12f3f18b7eff5	Third Party Advisory

URL	Date	SRC
http://www.ubuntu.com/usn/USN-3287-1	2024-08-05

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-updates/2017-05/msg00090.html	2023-11-07
http://www.debian.org/security/2017/dsa-3848	2023-11-07
https://access.redhat.com/errata/RHSA-2017:2004	2023-11-07
https://access.redhat.com/errata/RHSA-2017:2491	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3ISHYFLM2ACYHHY3JHCLF75X7UF4ZMDM	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPYRN7APMHY4ZFDPAKD22J5R4QJFY2JP	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FDS3LSJJ3YGGQYIVPKQDVOCXWDSF6JGF	2023-11-07
https://security.gentoo.org/glsa/201706-04	2023-11-07
https://access.redhat.com/security/cve/CVE-2017-8386	2017-08-17
https://bugzilla.redhat.com/show_bug.cgi?id=1450407	2017-08-17

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Git Search vendor "Git"		Git-shell Search vendor "Git" for product "Git-shell"				-		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.1 Search vendor "Opensuse" for product "Leap" and version "42.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				17.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.04"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				24 Search vendor "Fedoraproject" for product "Fedora" and version "24"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				25 Search vendor "Fedoraproject" for product "Fedora" and version "25"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				26 Search vendor "Fedoraproject" for product "Fedora" and version "26"		-		Affected