FreeBSD 9.3/10.1/10.2 Linux Support issetugid access control

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in FreeBSD 9.3/10.1/10.2. Affected by this vulnerability is the function issetugid of the component Linux Support. Performing a manipulation results in access control. This vulnerability is identified as CVE-2016-1883. The attack is only possible with local access. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in FreeBSD 9.3/10.1/10.2 (Operating System). This affects the function issetugid of the component Linux Support. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The issetugid system call in the Linux compatibility layer in FreeBSD 9.3, 10.1, and 10.2 allows local users to gain privilege via unspecified vectors.

The weakness was released 01/27/2016 as FreeBSD-SA-16:10.linux as confirmed advisory (Website). It is possible to read the advisory at security.FreeBSD.org. This vulnerability is uniquely identified as CVE-2016-1883 since 01/13/2016. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 92920 (FreeBSD : FreeBSD -- Linux compatibility layer issetugid(2) system call (7ac28df1-600a-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.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92920) and SecurityTracker (ID 1034872†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92920
Nessus Name: FreeBSD : FreeBSD -- Linux compatibility layer issetugid(2) system call (7ac28df1-600a-11e6-a6c3-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

01/13/2016 🔍
01/27/2016 +14 days 🔍
01/27/2016 +0 days 🔍
01/29/2016 +2 days 🔍
02/01/2016 +3 days 🔍
08/12/2016 +193 days 🔍
02/15/2017 +187 days 🔍
07/11/2018 +511 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-16:10.linux
Status: Confirmed

CVE: CVE-2016-1883 (🔍)
GCVE (CVE): GCVE-0-2016-1883
GCVE (VulDB): GCVE-100-80751
SecurityTracker: 1034872

Entryinfo

Created: 02/01/2016 11:32
Updated: 07/11/2018 04:13
Changes: 02/01/2016 11:32 (57), 07/11/2018 04:13 (15)
Complete: 🔍
Cache ID: 216::103

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

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