FreeSSHD 1.2.1 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in FreeSSHD 1.2.1. This vulnerability affects unknown code. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2008-4762. Furthermore, an exploit is available.

Detailsinfo

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116008 (freeSSHd SFTP "rename" Remote Denial of Service Vulnerability).

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), Exploit-DB (6800), SecurityFocus (BID 31872†), OSVDB (50057†) and Secunia (SA32366†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.9
VulDB Temp Score: 9.0
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

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 🔍
05/25/2025 +3722 days 🔍

Sourcesinfo

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

CVE: CVE-2008-4762 (🔍)
GCVE (CVE): GCVE-0-2008-4762
GCVE (VulDB): GCVE-100-44740
X-Force: 46046
SecurityFocus: 31872 - freeSSHd SFTP 'rename' Remote Buffer Overflow Vulnerability
Secunia: 32366
OSVDB: 50057 - freeSSHd - SFTP 'rename' Remote Denial of Service Issue
SecurityTracker: 1021096
Vulnerability Center: 19908 - FreeSSHd 1.2.1 Stack-Based Buffer Overflow Allows Remote Users to Execute Code or Cause DoS, High
Vupen: ADV-2008-2897

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

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/25/2025 07:13
Changes: 03/17/2015 16:11 (62), 08/20/2019 09:49 (14), 11/08/2024 11:15 (21), 05/25/2025 07:13 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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