Linux Kernel up to 4.13.3 drivers/scsi/sg.c sg_ioctl IOCTL Call information disclosure

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.
4.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.13.3. This vulnerability affects the function sg_ioctl of the file drivers/scsi/sg.c. The manipulation as part of IOCTL Call results in information disclosure. This vulnerability was named CVE-2017-14991. The attack needs to be approached locally. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.13.3 (Operating System). Affected is the function sg_ioctl of the file drivers/scsi/sg.c. The manipulation as part of a IOCTL Call leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for /dev/sg0.

The bug was discovered 09/15/2017. The weakness was presented 10/04/2017 by Andy Lutomirski as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2017-14991 since 10/03/2017. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104180 (Amazon Linux AMI : kernel (ALAS-2017-914) (BlueBorne)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196961 (Ubuntu Security Notification for Linux, Linux-aws, Linux-gke, Linux-kvm, Linux-raspi2, Linux-snapdragon (USN-3469-1)).

Upgrading to version 4.13.4 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104180) and SecurityFocus (BID 101187†). See VDB-102883, VDB-102882, VDB-107802 and VDB-107763 for similar entries. 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: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
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: 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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 104180
Nessus Name: Amazon Linux AMI : kernel (ALAS-2017-914) (BlueBorne)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux-lts-xenial USN-3469-2
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: 🔍

Upgrade: Kernel 4.13.4
Patch: git.kernel.org

Timelineinfo

09/15/2017 🔍
10/03/2017 +18 days 🔍
10/03/2017 +0 days 🔍
10/03/2017 +0 days 🔍
10/04/2017 +1 days 🔍
10/04/2017 +0 days 🔍
10/26/2017 +22 days 🔍
10/27/2017 +1 days 🔍
12/30/2022 +1890 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 3e0097499839e0fe3af380410eababe5a47c4cf9
Researcher: Andy Lutomirski
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-14991 (🔍)
GCVE (CVE): GCVE-0-2017-14991
GCVE (VulDB): GCVE-100-107418
SecurityFocus: 101187 - Linux Kernel CVE-2017-14991 Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 10/04/2017 10:16
Updated: 12/30/2022 16:05
Changes: 10/04/2017 10:16 (82), 11/21/2019 16:53 (6), 12/30/2022 15:59 (4), 12/30/2022 16:05 (1)
Complete: 🔍
Cache ID: 216:B78:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!