FreeSSHD 1.2.1 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$0-$5k0.00

A vulnerability classified as critical was found in FreeSSHD 1.2.1 (SSH Server Software). This vulnerability affects an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in freeSSHd 1.2.1 allows remote authenticated users to cause a denial of service (service crash) and potentially execute arbitrary code via a long argument to the (1) rename and (2) realpath parameters.

The bug was discovered 10/22/2008. The weakness was published 10/27/2008 by Jeremy Brown with Brown (Website). The advisory is shared for download at xforce.iss.net. This vulnerability was named CVE-2008-4762 since 10/27/2008. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is necessary for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Perl. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k.

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 (46046) and Exploit-DB (6800).

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.9
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 900165
OpenVAS Name: freeSSHd SFTP rename and realpath Remote DoS Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/22/2008 🔍
10/22/2008 +0 days 🔍
10/22/2008 +0 days 🔍
10/23/2008 +1 days 🔍
10/27/2008 +4 days 🔍
10/27/2008 +0 days 🔍
10/27/2008 +0 days 🔍
11/02/2008 +6 days 🔍
03/17/2015 +2326 days 🔍
08/20/2019 +1617 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: Jeremy Brown
Organization: Brown
Status: Not defined

CVE: CVE-2008-4762 (🔍)
X-Force: 46046
SecurityTracker: 1021096
Vulnerability Center: 19908 - FreeSSHd 1.2.1 Stack-Based Buffer Overflow Allows Remote Users to Execute Code or Cause DoS, High
SecurityFocus: 31872 - freeSSHd SFTP 'rename' Remote Buffer Overflow Vulnerability
Secunia: 32366
OSVDB: 50057 - freeSSHd - SFTP 'rename' Remote Denial of Service Issue
Vupen: ADV-2008-2897

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/20/2019 09:49
Changes: 03/17/2015 16:11 (62), 08/20/2019 09:49 (14)
Complete: 🔍

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