Linux Kernel 4.3.3 vivid-osd.c vivid_fb_ioctl fb_vblank information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
2.1 | $0-$5k | 0.00 |
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) and Tenable (87468). Additional details are provided at seclists.org. Entries connected to this vulnerability are available at 78722 and 80722.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 2.3VulDB 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: 🔍
CVSSv2
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: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592
Local: Yes
Remote: No
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: git.kernel.org
Timeline
10/21/2015 🔍10/21/2015 🔍
10/21/2015 🔍
10/22/2015 🔍
12/16/2015 🔍
12/16/2015 🔍
12/27/2015 🔍
12/28/2015 🔍
01/06/2016 🔍
01/30/2016 🔍
06/23/2022 🔍
Sources
Vendor: kernel.orgAdvisory: USN-2842-1
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2015-7884 (🔍)
X-Force: 107416 - Linux Kernel struct fb_vblank information disclosure
SecurityTracker: 1034893
Vulnerability Center: 55533 - Linux Kernel <=4.3.3 Local Information Disclosure in vivid-osd - CVE-2015-7884, Low
SecurityFocus: 77317 - Linux Kernel Multiple Local Information Disclosure Vulnerabilities
Misc.: 🔍
See also: 🔍
Entry
Created: 10/22/2015 10:04Updated: 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: 🔍
No comments yet. Languages: en.
Please log in to comment.