OpenBSD OpenSSH User Account information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in OpenBSD OpenSSH (Connectivity Software) (affected version not known) and classified as problematic. Affected by this issue is some unknown processing of the component User Account. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. Impacted is confidentiality. CVE summarizes:

OpenSSH, when using OPIE (One-Time Passwords in Everything) for PAM, allows remote attackers to determine the existence of certain user accounts, which displays a different response if the user account exists and is configured to use one-time passwords (OTP), a similar issue to CVE-2007-2243.

The weakness was released 04/25/2007 by Stanislaw Klekot (Website). The advisory is shared for download at This vulnerability is handled as CVE-2007-2768. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/05/2017).

The vulnerability scanner Nessus provides a plugin with the ID 17705 (OPIE w/ OpenSSH Account Enumeration), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (34490), Vulnerability Center (SBV-33987) and Tenable (17705).





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍



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NVD Base Score: 🔍


Class: Information disclosure
CWE: CWE-200
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 17705
Nessus Name: OPIE w/ OpenSSH Account Enumeration
Nessus File: 🔍
Nessus Family: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


04/25/2007 🔍
05/04/2007 +9 days 🔍
05/21/2007 +17 days 🔍
05/21/2007 +0 days 🔍
11/18/2011 +1642 days 🔍
12/06/2011 +18 days 🔍
03/13/2015 +1193 days 🔍
02/26/2017 +716 days 🔍
04/05/2017 +38 days 🔍



Researcher: Stanislaw Klekot
Status: Not defined

CVE: CVE-2007-2768 (🔍)
X-Force: 34490
Vulnerability Center: 33987 - OpenSSH when Using OPIE for PAM Remote Disclosure of User Accounts Existence, Low
OSVDB: 34601 - OPIE w/ OpenSSH Account Enumeration


Created: 03/13/2015 02:56 PM
Updated: 04/05/2017 03:03 PM
Changes: (8) vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai advisory_url advisory_person_name
Complete: 🔍


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