VDB-96554 · CVE-2016-10154 · BID 95714

Linux Kernel up to 4.9.0 fs/cifs/smbencrypt.c smbhash memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.9.0. The impacted element is the function smbhash of the file fs/cifs/smbencrypt.c. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2016-10154. An attack has to be approached locally. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.9.0 (Operating System). Affected by this issue is the function smbhash of the file fs/cifs/smbencrypt.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The smbhash function in fs/cifs/smbencrypt.c in the Linux kernel 4.9.x before 4.9.1 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more than one virtual page for a scatterlist.

The bug was discovered 01/24/2017. The weakness was shared 02/06/2017 (Website). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2016-10154 since 01/20/2017. Local access is required to approach this attack. A simple authentication is necessary for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276417 (Fedora Security Update for kernel (FEDORA-2017-6cc158c193)).

Upgrading to version 4.9.x eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 95714†). The entries VDB-96553, VDB-96564, VDB-96565 and VDB-96567 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.9.x
Patch: git.kernel.org

Timelineinfo

01/20/2017 🔍
01/23/2017 +3 days 🔍
01/24/2017 +1 days 🔍
02/06/2017 +13 days 🔍
02/06/2017 +0 days 🔍
02/06/2017 +0 days 🔍
11/11/2022 +2104 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 06deeec77a5a689cc94b21a8a91a76e42176685d
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10154 (🔍)
GCVE (CVE): GCVE-0-2016-10154
GCVE (VulDB): GCVE-100-96554
SecurityFocus: 95714 - Linux Kernel CVE-2016-10154 Local Denial of Service Vulnerability
OSVDB: - CVE-2016-10154 - Linux - Memory Corruption Issue

See also: 🔍

Entryinfo

Created: 02/06/2017 19:25
Updated: 11/11/2022 16:10
Changes: 02/06/2017 19:25 (71), 11/11/2022 16:10 (4)
Complete: 🔍
Cache ID: 216:A70:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!