OpenBSD OpenSSH up to 4.3 information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD OpenSSH up to 4.3 and classified as problematic. The impacted element is an unknown function. Executing a manipulation can lead to information disclosure. This vulnerability is tracked as CVE-2006-5052. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in OpenBSD OpenSSH up to 4.3 (Connectivity Software) and classified as problematic. This vulnerability affects an unknown code. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

Unspecified vulnerability in portable OpenSSH before 4.4, when running on some platforms, allows remote attackers to determine the validity of usernames via unknown vectors involving a GSSAPI "authentication abort."

The bug was discovered 09/27/2006. The weakness was disclosed 09/29/2006 (Website). The advisory is shared for download at us-cert.gov. This vulnerability was named CVE-2006-5052 since 09/27/2006. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 67053 (CentOS 4 : openssh (CESA-2007:0703)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38560 (OpenSSH Signal Handling Vulnerability).

Upgrading to version 4.4 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (29255), Tenable (67053), SecurityFocus (BID 20245†), OSVDB (29266†) and Secunia (SA22196†). The entries VDB-2578, VDB-2824, VDB-2832 and VDB-2833 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67053
Nessus Name: CentOS 4 : openssh (CESA-2007:0703)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57492
OpenVAS Name: Slackware Advisory SSA:2006-272-02 openssh
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: OpenSSH 4.4

Timelineinfo

09/27/2006 🔍
09/27/2006 +0 days 🔍
09/27/2006 +0 days 🔍
09/27/2006 +0 days 🔍
09/27/2006 +0 days 🔍
09/28/2006 +1 days 🔍
09/29/2006 +1 days 🔍
09/29/2006 +0 days 🔍
09/29/2006 +0 days 🔍
10/01/2006 +1 days 🔍
11/15/2007 +410 days 🔍
06/29/2013 +2053 days 🔍
03/12/2015 +621 days 🔍
07/08/2019 +1579 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: us-cert.gov
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-5052 (🔍)
GCVE (CVE): GCVE-0-2006-5052
GCVE (VulDB): GCVE-100-32512

OVAL: 🔍

X-Force: 29255
SecurityFocus: 20245 - OpenSSH-Portable GSSAPI Authentication Abort Information Disclosure Weakness
Secunia: 22196 - Red Hat update for openssh, Highly Critical
OSVDB: 29266 - OpenSSH GSSAPI Authentication Abort Username Enumeration
SecurityTracker: 1016939
Vulnerability Center: 12800 - Portable OpenSSH Before 4.4 Allows Remote Disclosure of Usernames, Medium
Vupen: ADV-2007-0930

See also: 🔍

Entryinfo

Created: 03/12/2015 15:51
Updated: 07/08/2019 21:09
Changes: 03/12/2015 15:51 (81), 07/08/2019 21:09 (10)
Complete: 🔍
Cache ID: 216:6B7:103

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