VDB-107960 · CVE-2015-3400 · BID 74272

sharenfs 0.6.4 ZFS File system nfs.c Commit information disclosure

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in sharenfs 0.6.4. It has been declared as problematic. The affected element is an unknown function of the file nfs.c of the component ZFS File system. Such manipulation as part of Commit leads to information disclosure. This vulnerability is referenced as CVE-2015-3400. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in sharenfs 0.6.4 and classified as problematic. Affected by this issue is some unknown processing of the file nfs.c of the component ZFS File system. The manipulation as part of a Commit leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

sharenfs 0.6.4, when built with commits bcdd594 and 7d08880 from the zfs repository, provides world readable access to the shared zfs file system, which might allow remote authenticated users to obtain sensitive information by reading shared files.

The bug was discovered 04/22/2015. The weakness was published 10/18/2017 by Kash Pande (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2015-3400 since 04/22/2015. The attack may be launched remotely. Required for exploitation is a simple authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 910 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 vulnerability database at SecurityFocus (BID 74272†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

sharenfs

Version

0.6.4

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

04/21/2015 🔍
04/22/2015 +1 days 🔍
04/22/2015 +0 days 🔍
10/18/2017 +910 days 🔍
10/18/2017 +0 days 🔍
10/18/2017 +0 days 🔍
01/03/2023 +1903 days 🔍

Sourcesinfo

Advisory: 99aa4d2b4fd12c6bef62d02ffd1b375ddd42fcf4
Researcher: Kash Pande
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-3400 (🔍)
GCVE (CVE): GCVE-0-2015-3400
GCVE (VulDB): GCVE-100-107960
SecurityFocus: 74272 - Debian zfsonlinux 'nfs.c' Security Bypass Vulnerability

Entryinfo

Created: 10/19/2017 00:15
Updated: 01/03/2023 19:46
Changes: 10/19/2017 00:15 (63), 11/25/2019 17:56 (1), 01/03/2023 19:39 (4), 01/03/2023 19:46 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.