FreeBSD 9.3/10.1 setgroups Syscall access control

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in FreeBSD 9.3/10.1. The impacted element is an unknown function of the component setgroups Syscall Handler. Such manipulation leads to access control. This vulnerability is listed as CVE-2016-1881. The attack must be carried out locally. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in FreeBSD 9.3/10.1 (Operating System). Affected by this issue is an unknown function of the component setgroups Syscall Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The kernel in FreeBSD 9.3, 10.1, and 10.2 allows local users to cause a denial of service (crash) or potentially gain privilege via a crafted Linux compatibility layer setgroups system call.

The weakness was presented 01/14/2016 as FreeBSD-SA-16:04.linux as confirmed advisory (Website). The advisory is available at security.freebsd.org. This vulnerability is handled as CVE-2016-1881 since 01/13/2016. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 92917 (FreeBSD : FreeBSD -- Linux compatibility layer setgroups(2) system call (798f63e0-600a-11e6-a6c3-14dae9d210b8)), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124628 (FreeBSD Multiple Security Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (109643), Tenable (92917), SecurityFocus (BID 80697†) and Vulnerability Center (SBV-56709†). See VDB-4597, VDB-4598, VDB-79101 and VDB-80316 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92917
Nessus Name: FreeBSD : FreeBSD -- Linux compatibility layer setgroups(2) system call (798f63e0-600a-11e6-a6c3-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

01/13/2016 🔍
01/14/2016 +1 days 🔍
01/14/2016 +0 days 🔍
01/19/2016 +5 days 🔍
02/01/2016 +13 days 🔍
02/21/2016 +20 days 🔍
08/12/2016 +172 days 🔍
02/14/2017 +187 days 🔍
07/03/2022 +1964 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-16:04.linux
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1881 (🔍)
GCVE (CVE): GCVE-0-2016-1881
GCVE (VulDB): GCVE-100-80318
X-Force: 109643 - FreeBSD setgroups(2) privilege escalation
SecurityFocus: 80697
SecurityTracker: 1034676
Vulnerability Center: 56709 - FreeBSD Local Privilege Escalation Using Linux Binary Compatibility, Medium

See also: 🔍

Entryinfo

Created: 01/19/2016 10:33
Updated: 07/03/2022 15:03
Changes: 01/19/2016 10:33 (64), 08/23/2018 08:20 (16), 07/03/2022 15:03 (3)
Complete: 🔍
Cache ID: 216:C11:103

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