VDB-110784 · CVE-2017-17741 · BID 103459

Linux Kernel up to 4.14.7 KVM arch/x86/kvm/x86.c out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability, which was classified as critical, was found in Linux Kernel up to 4.14.7 (Operating System). Affected is some unknown functionality of the file arch/x86/kvm/x86.c of the component KVM. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The KVM implementation in the Linux kernel through 4.14.7 allows attackers to cause a denial of service (write_mmio stack-based out-of-bounds read) or possibly have unspecified other impact, related to arch/x86/kvm/x86.c and include/trace/events/kvm.h.

The bug was discovered 12/13/2017. The weakness was shared 12/18/2017 (Website). The advisory is shared for download at debian.org. This vulnerability is traded as CVE-2017-17741 since 12/18/2017. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 105447 (Fedora 26 : kernel (2017-7810b7c59f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351263 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-002).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105447).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105447
Nessus Name: Fedora 26 : kernel (2017-7810b7c59f)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801904
OpenVAS Name: Fedora Update for kernel FEDORA-2017-7810b7c59f
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

12/13/2017 🔍
12/18/2017 +5 days 🔍
12/18/2017 +0 days 🔍
12/18/2017 +0 days 🔍
12/18/2017 +0 days 🔍
12/24/2017 +6 days 🔍
12/26/2017 +2 days 🔍
03/05/2018 +69 days 🔍
01/18/2023 +1780 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-7810b7c59f
Researcher: syzbot
Status: Not defined

CVE: CVE-2017-17741 (🔍)
OVAL: 🔍

SecurityFocus: 103459 - Linux Kernel CVE-2018-1068 Local Privilege Escalation Vulnerability

Entryinfo

Created: 12/18/2017 02:54 PM
Updated: 01/18/2023 10:36 AM
Changes: 12/18/2017 02:54 PM (79), 12/15/2019 09:29 PM (5), 01/27/2021 02:06 PM (3), 01/18/2023 10:30 AM (3), 01/18/2023 10:36 AM (1)
Complete: 🔍
Cache ID: 44:5B3:40

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