Linux Kernel up to 2.6.16.8 Filesystem path traversal

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 2.6.16.8. It has been rated as problematic. This affects an unknown part of the component Filesystem. This manipulation causes path traversal. This vulnerability is handled as CVE-2006-1864. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 2.6.16.8 (Operating System) and classified as problematic. Affected by this vulnerability is an unknown function of the component Filesystem. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Directory traversal vulnerability in smbfs in Linux 2.6.16 and earlier allows local users to escape chroot restrictions for an SMB-mounted filesystem via "..\\" sequences, a similar vulnerability to CVE-2006-1863.

The bug was discovered 04/24/2006. The weakness was released 04/19/2006 by Marcel Holtmann as Bug 189435 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2006-1864 since 04/19/2006. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22879 (CentOS 3 : kernel (CESA-2006:0710)), 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 156198 (Oracle Enterprise Linux Update for Kernel (ELSA-2006:0710)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26137), Exploit-DB (27766), Tenable (22879), SecurityFocus (BID 17735†) and OSVDB (25067†). Entries connected to this vulnerability are available at VDB-2589, VDB-2603, VDB-2964 and VDB-30400. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22879
Nessus Name: CentOS 3 : kernel (CESA-2006:0710)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56956
OpenVAS Name: Debian Security Advisory DSA 1097-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Timelineinfo

03/20/2006 🔍
04/19/2006 +30 days 🔍
04/19/2006 +0 days 🔍
04/19/2006 +0 days 🔍
04/24/2006 +4 days 🔍
04/26/2006 +2 days 🔍
04/26/2006 +0 days 🔍
04/28/2006 +2 days 🔍
04/28/2006 +0 days 🔍
05/29/2006 +30 days 🔍
10/19/2006 +143 days 🔍
10/20/2006 +1 days 🔍
03/12/2015 +3065 days 🔍
02/02/2025 +3615 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 189435
Researcher: Marcel Holtmann
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-1864 (🔍)
GCVE (CVE): GCVE-0-2006-1864
GCVE (VulDB): GCVE-100-29911

OVAL: 🔍

X-Force: 26137
SecurityFocus: 17735 - Linux Kernel SMBFS CHRoot Security Restriction Bypass Vulnerability
Secunia: 19869
OSVDB: 25067 - Linux Kernel SMBFS SMB Mount Traversal chroot Restriction Bypass
Vulnerability Center: 11680 - Linux Kernel Directory Traversal Vulnerability in smbfs allows chroot Restrictions Bypass, Medium
Vupen: ADV-2006-2554

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

Entryinfo

Created: 03/12/2015 12:19
Updated: 02/02/2025 12:08
Changes: 03/12/2015 12:19 (86), 06/19/2019 14:58 (6), 02/02/2025 12:08 (21)
Complete: 🔍
Cache ID: 216:3DB:103

Be aware that VulDB is the high quality source for vulnerability data.

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