OpenBSD OpenSSH 7.1 X11 Forwarding 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in OpenBSD OpenSSH 7.1. This issue affects some unknown processing of the component X11 Forwarding. Executing a manipulation can lead to 7pk security. This vulnerability is handled as CVE-2016-1908. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH 7.1 (Connectivity Software). It has been declared as critical. This vulnerability affects some unknown functionality of the component X11 Forwarding. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 01/22/2016 (Website). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2016-1908 since 01/15/2016. The attack can be initiated remotely. A single authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability scanner Nessus provides a plugin with the ID 89528 (Fedora 23 : gsi-openssh-7.1p2-3.fc23 (2016-4509765b4b)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236003 (Red Hat Update for openssh (RHSA-2016:0741)).

Upgrading to version 7.1p2 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110030), Tenable (89528), SecurityFocus (BID 84427†) and Vulnerability Center (SBV-57543†). Entries connected to this vulnerability are available at VDB-77396, VDB-77397 and VDB-78828. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89528
Nessus Name: Fedora 23 : gsi-openssh-7.1p2-3.fc23 (2016-4509765b4b)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-675
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: OpenSSH 7.1p2
Patch: anongit.mindrot.org

Timelineinfo

01/15/2016 🔍
01/15/2016 +0 days 🔍
01/22/2016 +7 days 🔍
01/25/2016 +3 days 🔍
02/10/2016 +16 days 🔍
03/04/2016 +23 days 🔍
03/04/2016 +0 days 🔍
03/22/2016 +18 days 🔍
04/11/2017 +385 days 🔍
05/30/2026 +3336 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: FEDORA-2016-4509765b4b
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1908 (🔍)
GCVE (CVE): GCVE-0-2016-1908
GCVE (VulDB): GCVE-100-80656
X-Force: 110030 - OpenSSH X11 security bypass
SecurityFocus: 84427 - OpenSSH CVE-2016-1908 Security Bypass Vulnerability
SecurityTracker: 1034705
Vulnerability Center: 57543 - OpenSSH before 7.2 Remote Restrictions Bypass Vulnerability, High

See also: 🔍

Entryinfo

Created: 01/25/2016 13:51
Updated: 05/30/2026 03:30
Changes: 01/25/2016 13:51 (78), 02/02/2019 11:00 (12), 07/06/2022 09:23 (6), 07/06/2022 09:24 (1), 05/30/2026 03:30 (25)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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