nfs-server up to 2.x rpc.mountd realpath memory corruption

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

Summaryinfo

A vulnerability classified as critical was found in nfs-server up to 2.x. This vulnerability affects the function realpath of the component rpc.mountd. The manipulation results in memory corruption. This vulnerability is identified as CVE-2006-0043. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as critical has been found in nfs-server up to 2.x. Affected is the function realpath of the component rpc.mountd. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the realpath function in nfs-server rpc.mountd, as used in SUSE Linux 9.1 through 10.0, allows local users to execute arbitrary code via unspecified vectors involving mount requests and symlinks.

The bug was discovered 01/26/2006. The weakness was released 01/27/2006 with SuSE (Website). The advisory is shared for download at lists.suse.com. This vulnerability is traded as CVE-2006-0043 since 12/20/2005. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22841 (Debian DSA-975-1 : nfs-user-server - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4131.

The vulnerability is also documented in the databases at X-Force (24347), Tenable (22841), SecurityFocus (BID 16388†), OSVDB (22756†) and Secunia (SA18889†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

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

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22841
Nessus Name: Debian DSA-975-1 : nfs-user-server - buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56278
OpenVAS Name: Debian Security Advisory DSA 975-1 (nfs-user-server)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

12/20/2005 🔍
01/26/2006 +37 days 🔍
01/26/2006 +0 days 🔍
01/27/2006 +1 days 🔍
01/27/2006 +0 days 🔍
01/30/2006 +2 days 🔍
01/30/2006 +0 days 🔍
01/30/2006 +0 days 🔍
02/15/2006 +16 days 🔍
10/14/2006 +241 days 🔍
06/13/2019 +4625 days 🔍

Sourcesinfo

Advisory: lists.suse.com
Researcher: http://www.suse.com
Organization: SuSE
Status: Not defined

CVE: CVE-2006-0043 (🔍)
GCVE (CVE): GCVE-0-2006-0043
GCVE (VulDB): GCVE-100-2016
X-Force: 24347 - NFS server rpc.mountd realpath() buffer overflow, High Risk
SecurityFocus: 16388 - NFS-SERVER Remote Buffer Overflow Vulnerability
Secunia: 18889 - Debian update for nfs-user-server, Moderately Critical
OSVDB: 22756 - Linux nfs-server rpc.mountd realpath() Function Overflow
Vulnerability Center: 10230 - S.u.S.E NFS Server Buffer Overflow via Symlink Attack on rpc.mountd realpath() Function, High
Vupen: ADV-2006-0348

Entryinfo

Created: 01/30/2006 12:28
Updated: 06/13/2019 16:46
Changes: 01/30/2006 12:28 (93), 06/13/2019 16:46 (1)
Complete: 🔍
Cache ID: 216::103

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