CVE-2017-1000368

sudo: Privilege escalation via improper get_process_ttyname() parsing (insufficient fix for CVE-2017-1000367)

Severity Score

8.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Todd Miller's sudo version 1.8.20p1 and earlier is vulnerable to an input validation (embedded newlines) in the get_process_ttyname() function resulting in information disclosure and command execution.

La versión 1.8.20p1 y anteriores de sudo de Todd Miller es vulnerable a una validación de entradas (nuevas líneas embebidas) en la función get_process_ttyname() que da lugar a una revelación de información y la ejecución de comandos.

It was found that the original fix for CVE-2017-1000367 was incomplete. A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root.

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. Security Fix: It was found that the original fix for CVE-2017-1000367 was incomplete. A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-06-02 CVE Reserved
2017-06-05 CVE Published
2024-08-05 CVE Updated
2025-04-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (11)

URL	Tag	Source
http://www.securityfocus.com/bid/98838	Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10205	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2017:1574	2019-05-29
https://security.gentoo.org/glsa/201710-04	2019-05-29
https://usn.ubuntu.com/3968-1	2019-05-29
https://usn.ubuntu.com/3968-2	2019-05-29
https://www.sudo.ws/alerts/linux_tty.html	2019-05-29
https://access.redhat.com/security/cve/CVE-2017-1000368	2017-06-22
https://bugzilla.redhat.com/show_bug.cgi?id=1459152	2017-06-22
https://access.redhat.com/security/cve/CVE-2017-1000367	2017-06-22
https://access.redhat.com/security/vulnerabilities/3059071	2017-06-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sudo Project Search vendor "Sudo Project"		Sudo Search vendor "Sudo Project" for product "Sudo"				<= 1.8.20 Search vendor "Sudo Project" for product "Sudo" and version " <= 1.8.20"		-		Affected
Sudo Project Search vendor "Sudo Project"		Sudo Search vendor "Sudo Project" for product "Sudo"				1.8.20 Search vendor "Sudo Project" for product "Sudo" and version "1.8.20"		p1		Affected