sudo up to 1.8.18 noexec system command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in sudo up to 1.8.18. It has been rated as critical. The impacted element is the function system of the component noexec. This manipulation causes command injection. The identification of this vulnerability is CVE-2016-7076. The attack can only be executed locally. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in sudo up to 1.8.18 (Operating System Utility Software). Affected by this vulnerability is the function system of the component noexec. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

sudo before version 1.8.18p1 is vulnerable to a bypass in the sudo noexec restriction if application run via sudo executed wordexp() C library function with a user supplied argument. A local user permitted to run such application via sudo with noexec restriction could possibly use this flaw to execute arbitrary commands with elevated privileges.

The bug was discovered 12/06/2016. The weakness was shared 05/29/2018 (Website). It is possible to read the advisory at rhn.redhat.com. This vulnerability is known as CVE-2016-7076 since 08/23/2016. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 32 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 99851 (EulerOS 2.0 SP1 : sudo (EulerOS-SA-2017-1004)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197451 (Ubuntu Security Notification for Sudo Vulnerabilities (USN-3968-1)).

Applying the patch 1.8.18p1 is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99851) and SecurityFocus (BID 95778†). The entry VDB-101975 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System Utility Software

Name

• sudo

Version

• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.8.4
• 1.8.5
• 1.8.6
• 1.8.7
• 1.8.8
• 1.8.9
• 1.8.10
• 1.8.11
• 1.8.12
• 1.8.13
• 1.8.14
• 1.8.15
• 1.8.16
• 1.8.17
• 1.8.18

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 6.4
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 99851
Nessus Name: EulerOS 2.0 SP1 : sudo (EulerOS-SA-2017-1004)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for sudo CESA-2016:2872 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1.8.18p1

Timelineinfo

08/23/2016 🔍
12/06/2016 +105 days 🔍
01/07/2017 +32 days 🔍
01/25/2017 +18 days 🔍
05/01/2017 +96 days 🔍
05/29/2018 +392 days 🔍
05/29/2018 +0 days 🔍
05/29/2018 +0 days 🔍
03/17/2023 +1753 days 🔍

Sourcesinfo

Advisory: RHSA-2016:2872
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7076 (🔍)
GCVE (CVE): GCVE-0-2016-7076
GCVE (VulDB): GCVE-100-118279
SecurityFocus: 95778 - IBM PowerKVM CVE-2016-7076 Local Command Execution Vulnerability

See also: 🔍

Entryinfo

Created: 05/30/2018 00:05
Updated: 03/17/2023 13:11
Changes: 05/30/2018 00:05 (76), 02/09/2020 11:41 (5), 03/17/2023 13:05 (4), 03/17/2023 13:11 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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