FreeBSD 10.1 bsdinstall information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD 10.1. It has been classified as problematic. Affected is an unknown function of the component bsdinstall. Performing a manipulation results in information disclosure. This vulnerability is reported as CVE-2015-1415. No exploit exists. You should change the configuration settings.

Detailsinfo

A vulnerability, which was classified as problematic, was found in FreeBSD 10.1 (Operating System). This affects an unknown code block of the component bsdinstall. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.

The weakness was disclosed 04/07/2015 by Pierre Kim as FreeBSD-SA-15:08.bsdinstall as confirmed advisory (Website). It is possible to read the advisory at packetstormsecurity.com. This vulnerability is uniquely identified as CVE-2015-1415 since 01/27/2015. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. The advisory points out:

The GEOM ELI class, or geli(8) implements encryption on GEOM providers which supports various cryptographic encryption and authentication methods as well as hardware acceleration. Each geli(8) provider has two key slots, and each slot holds a copy of its master key encrypted by a keyfile and/or a passphrase chosen by the system administrator.

The vulnerability scanner Nessus provides a plugin with the ID 92887 (FreeBSD : FreeBSD -- Insecure default GELI keyfile permissions (0b65f297-600a-11e6-a6c3-14dae9d210b8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

It is possible to mitigate the problem by applying the configuration setting . A possible mitigation has been published 2 years after the disclosure of the vulnerability. The advisory contains the following remark:

due to the nature of this issue, there is no way to fix this issue for already installed systems without human intervention. System administrators are advised to assume that the keyfile have already been leaked and a new keyfile is necessary. (...) The system administrator can create a new keyfile with the correct permissions, and change the key slot that holds the master key encrypted with the old keyfile.

The vulnerability is also documented in the databases at X-Force (102111), Tenable (92887) and SecurityTracker (ID 1032042†). The entry VDB-74668 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92887
Nessus Name: FreeBSD : FreeBSD -- Insecure default GELI keyfile permissions (0b65f297-600a-11e6-a6c3-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Config
Status: 🔍

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

Timelineinfo

01/27/2015 🔍
04/07/2015 +70 days 🔍
04/08/2015 +1 days 🔍
04/08/2015 +0 days 🔍
04/10/2015 +2 days 🔍
08/11/2016 +489 days 🔍
08/12/2016 +1 days 🔍
05/02/2022 +2089 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-15:08.bsdinstall
Researcher: Pierre Kim
Status: Confirmed

CVE: CVE-2015-1415 (🔍)
GCVE (CVE): GCVE-0-2015-1415
GCVE (VulDB): GCVE-100-74667
X-Force: 102111 - FreeBSD ZFS information encryption.key disclosure
SecurityTracker: 1032042

See also: 🔍

Entryinfo

Created: 04/08/2015 15:15
Updated: 05/02/2022 19:57
Changes: 04/08/2015 15:15 (58), 04/21/2018 09:23 (11), 05/02/2022 19:57 (3)
Complete: 🔍
Cache ID: 216:ED1:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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