Linux Kernel 4.3.3 vivid-osd.c vivid_fb_ioctl fb_vblank information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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2.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 4.3.3. Impacted is the function vivid_fb_ioctl of the file drivers/media/platform/vivid/vivid-osd.c. This manipulation of the argument fb_vblank causes information disclosure. This vulnerability is handled as CVE-2015-7884. It is possible to launch the attack on the local host. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 4.3.3 (Operating System). It has been declared as problematic. Affected by this vulnerability is the function vivid_fb_ioctl of the file drivers/media/platform/vivid/vivid-osd.c. The manipulation of the argument fb_vblank with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The weakness was released 10/21/2015 as confirmed mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is known as CVE-2015-7884 since 10/21/2015. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of 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 87468 (Ubuntu 15.04 : linux vulnerabilities (USN-2842-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169316 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2016:1008-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 3 months after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

memset(&vblank, 0, sizeof(vblank));

The vulnerability is also documented in the databases at X-Force (107416), Tenable (87468), SecurityFocus (BID 77317†), SecurityTracker (ID 1034893†) and Vulnerability Center (SBV-55533†). Additional details are provided at seclists.org. Entries connected to this vulnerability are available at VDB-78722 and VDB-80722. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.3
VulDB Meta Temp Score: 2.1

VulDB Base Score: 2.3
VulDB Temp Score: 2.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.3
NVD Vector: 🔍

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: 87468
Nessus Name: Ubuntu 15.04 : linux vulnerabilities (USN-2842-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for the openSUSE-SU-2016:1008-1 (Linux Kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

10/21/2015 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/22/2015 +1 days 🔍
12/16/2015 +55 days 🔍
12/16/2015 +0 days 🔍
12/27/2015 +11 days 🔍
12/28/2015 +0 days 🔍
01/06/2016 +9 days 🔍
01/30/2016 +23 days 🔍
06/23/2022 +2336 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2842-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7884 (🔍)
GCVE (CVE): GCVE-0-2015-7884
GCVE (VulDB): GCVE-100-78721
X-Force: 107416 - Linux Kernel struct fb_vblank information disclosure
SecurityFocus: 77317 - Linux Kernel Multiple Local Information Disclosure Vulnerabilities
SecurityTracker: 1034893
Vulnerability Center: 55533 - Linux Kernel <=4.3.3 Local Information Disclosure in vivid-osd - CVE-2015-7884, Low

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/22/2015 10:04
Updated: 06/23/2022 20:36
Changes: 10/22/2015 10:04 (69), 09/21/2018 09:53 (20), 06/23/2022 20:27 (3), 06/23/2022 20:36 (10)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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