NFSv4 nfsidmap 0.16.22 getpwnam_r Local Privilege Escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in NFSv4 nfsidmap 0.16.22. This affects the function getpwnam_r. The manipulation results in Local Privilege Escalation. This vulnerability is known as CVE-2007-4135. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in NFSv4 nfsidmap 0.16.22. Affected is the function getpwnam_r. The manipulation with an unknown input leads to a local privilege escalation vulnerability. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The NFSv4 ID mapper (nfsidmap) before 0.17 does not properly handle return values from the getpwnam_r function when performing a username lookup, which can cause it to report a file as being owned by "root" instead of "nobody" if the file exists on the server but not on the client.

The bug was discovered 08/31/2007. The weakness was published 09/04/2007 (Website). The advisory is shared for download at secunia.com. This vulnerability is traded as CVE-2007-4135 since 08/02/2007. The exploitability is told to be difficult. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 29298 (Mandrake Linux Security Advisory : libnfsidmap (MDKSA-2007:240)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156027 (Oracle Enterprise Linux Update for nfs-utils-lib (ELSA-2007-0951)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (36396), Tenable (29298), SecurityFocus (BID 26767†), OSVDB (45825†) and Secunia (SA26674†). Similar entries are available at VDB-38641 and VDB-38538. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.4
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 29298
Nessus Name: Mandrake Linux Security Advisory : libnfsidmap (MDKSA-2007:240)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 830039
OpenVAS Name: Zoho ManageEngine Support Center Plus Multiple Fields XSS Vulnerabilities
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: 🔍

Timelineinfo

08/02/2007 🔍
08/31/2007 +29 days 🔍
08/31/2007 +0 days 🔍
09/03/2007 +3 days 🔍
09/04/2007 +1 days 🔍
09/04/2007 +0 days 🔍
10/07/2007 +33 days 🔍
12/07/2007 +61 days 🔍
12/07/2007 +0 days 🔍
12/11/2007 +4 days 🔍
06/01/2008 +173 days 🔍
03/16/2015 +2478 days 🔍
07/27/2019 +1594 days 🔍

Sourcesinfo

Advisory: secunia.com⛔
Status: Not defined

CVE: CVE-2007-4135 (🔍)
GCVE (CVE): GCVE-0-2007-4135
GCVE (VulDB): GCVE-100-38640

OVAL: 🔍

X-Force: 36396
SecurityFocus: 26767 - NFSv4 ID Mapper nfsidmap Username Lookup Local Privilege Escalation Vulnerability
Secunia: 26674
OSVDB: 45825 - NFSv4 ID Mapper (nfsidmap) getpwnam_r Function Username Lookup File Ownership Mismatch Weakness
Vulnerability Center: 16271 - Multiple Linux Servers NFSv4 ID Mapper Local Privilege Escalation Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/16/2015 12:18
Updated: 07/27/2019 09:57
Changes: 03/16/2015 12:18 (80), 07/27/2019 09:57 (3)
Complete: 🔍
Cache ID: 216:D3D:103

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