OpenSSH up to 7.3 Unix-Domain Socket 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 labeled as critical has been found in OpenSSH up to 7.3. This affects an unknown function of the component Unix-Domain Socket Handler. The manipulation results in access control. This vulnerability was named CVE-2016-10010. The attack may be performed from remote. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in OpenSSH up to 7.3 (Connectivity Software). Affected is an unknown part of the component Unix-Domain Socket Handler. 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. CVE summarizes:

sshd in OpenSSH before 7.4, when privilege separation is not used, creates forwarded Unix-domain sockets as root, which might allow local users to gain privileges via unspecified vectors, related to serverloop.c.

The bug was discovered 12/19/2016. The weakness was presented 12/19/2016 by Jann Horn as release-7.4 as confirmed release notes (Website). The advisory is shared for download at openssh.com. The public release was coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2016-10010 since 12/19/2016. It is possible to launch the attack remotely. A authentication is necessary for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 96411 (FreeBSD : FreeBSD -- OpenSSH multiple vulnerabilities (2c948527-d823-11e6-9171-14dae9d210b8)), 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 197025 (Ubuntu Security Notification for Openssh Vulnerabilities (USN-3538-1)).

Upgrading to version 7.4 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 Exploit-DB (40962), Tenable (96411), SecurityFocus (BID 94972†), SecurityTracker (ID 1037490†) and CERT Bund (WID-SEC-2023-1996). Further details are available at seclists.org. See VDB-94607, VDB-94609, VDB-94610 and VDB-94611 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • FreeBSD

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.3

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

ADP CISA Base Score: 7.0
ADP CISA 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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96411
Nessus Name: FreeBSD : FreeBSD -- OpenSSH multiple vulnerabilities (2c948527-d823-11e6-9171-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT207615
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: OpenSSH 7.4
Patch: github.com

Timelineinfo

12/19/2016 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/20/2016 +1 days 🔍
01/04/2017 +15 days 🔍
01/12/2017 +8 days 🔍
05/30/2026 +3424 days 🔍

Sourcesinfo

Advisory: release-7.4
Researcher: Jann Horn
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-10010 (🔍)
GCVE (CVE): GCVE-0-2016-10010
GCVE (VulDB): GCVE-100-94608

OVAL: 🔍

SecurityFocus: 94972 - OpenSSH CVE-2016-10010 Privilege Escalation Vulnerability
SecurityTracker: 1037490
CERT Bund: WID-SEC-2023-1996 - OpenSSH: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 12/20/2016 10:26
Updated: 05/30/2026 01:39
Changes: 12/20/2016 10:26 (80), 08/03/2019 09:23 (14), 10/12/2022 11:20 (3), 11/29/2024 19:46 (14), 01/09/2026 15:12 (7), 05/30/2026 01:39 (12)
Complete: 🔍
Cache ID: 216::103

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