CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.6 | $0-$5k | 0.00 |
A vulnerability has been found in Linux Kernel up to 4.8.11 (Operating System) and classified as critical. Affected by this vulnerability is an unknown code block of the file drivers/vfio/pci/vfio_pci.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
drivers/vfio/pci/vfio_pci.c in the Linux kernel through 4.8.11 allows local users to bypass integer overflow checks, and cause a denial of service (memory corruption) or have unspecified other impact, by leveraging access to a vfio PCI device file for a VFIO_DEVICE_SET_IRQS ioctl call, aka a "state machine confusion bug."
The bug was discovered 10/26/2016. The weakness was disclosed 11/28/2016 by Vlad Tsyrklevich (Website). It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2016-9083 since 10/27/2016. The exploitation appears to be easy. Attacking locally is a requirement. The requirement for exploitation is a single authentication. Technical details of the vulnerability are known, but there is no available exploit.
The vulnerability was handled as a non-public zero-day exploit for at least 32 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 95702 (openSUSE Security Update : the Linux Kernel (openSUSE-2016-1428)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276227 (Fedora Security Update for kernel (FEDORA-2016-ee3a114958)).
Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (95702). The entries 93467, 93468, 93490 and 93842 are pretty similar.
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: 7.8VulDB Meta Temp Score: 7.6
VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: Integer overflowCWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 95702
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2016-1428)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 855579
OpenVAS Name: Fedora Update for kernel FEDORA-2016-96d276367e
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: git.kernel.org
Timeline
10/26/2016 🔍10/26/2016 🔍
10/27/2016 🔍
11/27/2016 🔍
11/28/2016 🔍
11/28/2016 🔍
12/08/2016 🔍
12/12/2016 🔍
10/04/2022 🔍
Sources
Vendor: kernel.orgAdvisory: 05692d7005a364add85c6e25a6c4447ce08f913a
Researcher: Vlad Tsyrklevich
Status: Not defined
Confirmation: 🔍
CVE: CVE-2016-9083 (🔍)
SecurityFocus: 93929 - Linux Kernel CVE-2016-9083 Local Integer Overflow Vulnerability
See also: 🔍
Entry
Created: 11/28/2016 09:31Updated: 10/04/2022 14:56
Changes: 11/28/2016 09:31 (67), 06/11/2019 10:20 (16), 10/04/2022 14:54 (4), 10/04/2022 14:56 (1)
Complete: 🔍
Cache ID: 3:C45:103
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