OpenSSH up to 4.6 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSSH up to 4.6. It has been classified as critical. Affected by this issue is some unknown functionality. This manipulation causes input validation. This vulnerability appears as CVE-2007-4752. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSSH up to 4.6 (Connectivity Software). It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ssh in OpenSSH before 4.7 does not properly handle when an untrusted cookie cannot be created and uses a trusted X11 cookie instead, which allows attackers to violate intended policy and gain privileges by causing an X client to be treated as trusted.

The bug was discovered 09/11/2007. The weakness was presented 09/11/2007 (Website). It is possible to read the advisory at issues.rpath.com. This vulnerability is known as CVE-2007-4752 since 09/07/2007. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 67742 (Oracle Linux 4 / 5 : openssh (ELSA-2008-0855)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 42377 (OpenSSH Version 4.6 and Prior X11 Cookie Privilege Escalation Vulnerability).

Upgrading to version 4.6 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 (36637), Tenable (67742), SecurityFocus (BID 25628†), OSVDB (43371†) and Secunia (SA27399†). See VDB-36382, VDB-38543 and VDB-44077 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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: Input validation
CWE: CWE-20
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: 67742
Nessus Name: Oracle Linux 4 / 5 : openssh (ELSA-2008-0855)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 61029
OpenVAS Name: Debian Security Advisory DSA 1576-1 (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 4.6

Timelineinfo

09/04/2007 🔍
09/07/2007 +3 days 🔍
09/11/2007 +4 days 🔍
09/11/2007 +0 days 🔍
09/11/2007 +0 days 🔍
09/11/2007 +0 days 🔍
09/16/2007 +5 days 🔍
10/29/2007 +43 days 🔍
08/27/2008 +303 days 🔍
07/12/2013 +1780 days 🔍
03/16/2015 +612 days 🔍
07/25/2019 +1592 days 🔍

Sourcesinfo

Advisory: issues.rpath.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-4752 (🔍)
GCVE (CVE): GCVE-0-2007-4752
GCVE (VulDB): GCVE-100-38743

OVAL: 🔍
IAVM: 🔍

X-Force: 36637
SecurityFocus: 25628 - OpenSSH X11 Cookie Local Authentication Bypass Vulnerability
Secunia: 27399
OSVDB: 43371 - CVE-2007-4752 - OpenBSD - OpenSSH - Security Bypass Issue
Vulnerability Center: 16049 - OpenSSH <4.7 Authentication Bypass via an X11 Cookie, High
Vupen: ADV-2007-3156

See also: 🔍

Entryinfo

Created: 03/16/2015 12:18
Updated: 07/25/2019 17:23
Changes: 03/16/2015 12:18 (83), 07/25/2019 17:23 (4)
Complete: 🔍
Cache ID: 216:843:103

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