Salt up to 2015.5.x/2015.8.x PAM External Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Salt up to 2015.5.x/2015.8.x. This vulnerability affects unknown code of the component PAM External Authentication. The manipulation results in improper authentication. This vulnerability is known as CVE-2016-3176. Attacking locally is a requirement. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Salt up to 2015.5.x/2015.8.x. Affected is an unknown part of the component PAM External Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Salt before 2015.5.10 and 2015.8.x before 2015.8.8, when PAM external authentication is enabled, allows attackers to bypass the configured authentication service by passing an alternate service with a command sent to LocalClient.

The bug was discovered 05/10/2015. The weakness was published 01/31/2017 (Website). The advisory is available at docs.saltstack.com. This vulnerability is traded as CVE-2016-3176 since 03/15/2016. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 322 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 90233 (FreeBSD : salt -- Insecure configuration of PAM external authentication service (6d25c306-f3bb-11e5-92ce-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading to version 2015.5.10 or 2015.8.8 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (90233). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90233
Nessus Name: FreeBSD : salt -- Insecure configuration of PAM external authentication service (6d25c306-f3bb-11e5-92ce-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Salt 2015.5.10/2015.8.8

Timelineinfo

05/10/2015 🔍
03/15/2016 +310 days 🔍
03/27/2016 +12 days 🔍
03/28/2016 +1 days 🔍
01/31/2017 +309 days 🔍
01/31/2017 +0 days 🔍
02/01/2017 +1 days 🔍
08/08/2020 +1284 days 🔍

Sourcesinfo

Advisory: docs.saltstack.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-3176 (🔍)
GCVE (CVE): GCVE-0-2016-3176
GCVE (VulDB): GCVE-100-96330
OSVDB: - CVE-2016-3176 - Salt - Authentication Bypass Issue

Entryinfo

Created: 02/01/2017 07:14
Updated: 08/08/2020 12:13
Changes: 02/01/2017 07:14 (64), 08/08/2020 12:13 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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