Linux Kernel up to 4.3.2 Compressed Inline Extents fs/btrfs/inode.c information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 4.3.2. Affected is an unknown function of the file fs/btrfs/inode.c of the component Compressed Inline Extents Handler. The manipulation leads to information disclosure. This vulnerability is referenced as CVE-2015-8374. The attack can only be performed from a local environment. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.3.2 (Operating System) and classified as problematic. This issue affects some unknown processing of the file fs/btrfs/inode.c of the component Compressed Inline Extents Handler. The manipulation with an unknown input 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. The summary by CVE is:

fs/btrfs/inode.c in the Linux kernel before 4.3.3 mishandles compressed inline extents, which allows local users to obtain sensitive pre-truncation information from a file via a clone action.

The weakness was published 12/28/2015 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2015-8374 since 11/27/2015. An attack has to be approached locally. Required for exploitation is a simple authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 87509 (Debian DSA-3426-2 : ctdb - security update), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236154 (Red Hat Update for kernel-rt (RHSA-2016:2584)).

Upgrading to version 4.3.3 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87509), SecurityFocus (BID 78219†) and Vulnerability Center (SBV-55535†). Similar entries are available at VDB-80182, VDB-82947, VDB-92395 and VDB-92504. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.0
NVD Vector: 🔍

CVSSv2info

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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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87509
Nessus Name: Debian DSA-3426-2 : ctdb - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703426
OpenVAS Name: Debian Security Advisory DSA 3426-1 (linux - security update)
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: 🔍

Upgrade: Kernel 4.3.3
Patch: git.kernel.org

Timelineinfo

10/16/2015 🔍
11/27/2015 +42 days 🔍
12/21/2015 +24 days 🔍
12/28/2015 +7 days 🔍
12/28/2015 +0 days 🔍
12/28/2015 +0 days 🔍
12/29/2015 +1 days 🔍
01/07/2016 +9 days 🔍
03/03/2016 +56 days 🔍
07/01/2022 +2311 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2886-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8374 (🔍)
GCVE (CVE): GCVE-0-2015-8374
GCVE (VulDB): GCVE-100-79925

OVAL: 🔍

SecurityFocus: 78219 - Linux Kernel 'btrfs/inode.c' Information Disclosure Vulnerability
SecurityTracker: 1034895
Vulnerability Center: 55535 - Linux Kernel <4.3.3 Local Information Disclosure in inode - CVE-2015-8374, Low

See also: 🔍

Entryinfo

Created: 12/29/2015 13:21
Updated: 07/01/2022 15:28
Changes: 12/29/2015 13:21 (78), 06/20/2018 08:42 (12), 07/01/2022 15:23 (5), 07/01/2022 15:28 (1)
Complete: 🔍
Cache ID: 216:7D7:103

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