Linux Kernel Extended BPF Verifier kernel/bpf/verifier.c input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel and classified as problematic. Affected by this issue is some unknown functionality of the file kernel/bpf/verifier.c of the component Extended BPF Verifier. The manipulation results in input validation. This vulnerability is cataloged as CVE-2017-17862. The attack must be initiated from a local position. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel (Operating System) (the affected version is unknown). Affected is an unknown code of the file kernel/bpf/verifier.c of the component Extended BPF Verifier. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability.

The bug was discovered 11/23/2017. The weakness was shared 12/26/2017 as confirmed git commit (GIT Repository). The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2017-17862 since 12/23/2017. The attack needs to be approached locally. A authentication is needed for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105433 (Debian DSA-4073-1 : linux - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197013 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3523-1) (Meltdown)).

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 before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105433), SecurityFocus (BID 102325†) and SecurityTracker (ID 1040057†). The entries VDB-110931, VDB-110932, VDB-110933 and VDB-111025 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105433
Nessus Name: Debian DSA-4073-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 835155
OpenVAS Name: Fedora Update for kernel FEDORA-2018-22d5fa8a90
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

11/23/2017 🔍
12/23/2017 +30 days 🔍
12/23/2017 +0 days 🔍
12/23/2017 +0 days 🔍
12/26/2017 +3 days 🔍
12/26/2017 +0 days 🔍
12/26/2017 +0 days 🔍
12/27/2017 +1 days 🔍
12/27/2017 +0 days 🔍
01/19/2023 +1849 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: usn-3523-2
Status: Confirmed

CVE: CVE-2017-17862 (🔍)
GCVE (CVE): GCVE-0-2017-17862
GCVE (VulDB): GCVE-100-111024

OVAL: 🔍

SecurityFocus: 102325 - Linux Kernel CVE-2017-17862 Local Denial of Service Vulnerability
SecurityTracker: 1040057

See also: 🔍

Entryinfo

Created: 12/27/2017 09:02
Updated: 01/19/2023 07:28
Changes: 12/27/2017 09:02 (78), 12/17/2019 19:35 (8), 01/28/2021 08:04 (3), 01/19/2023 07:21 (3), 01/19/2023 07:28 (1)
Complete: 🔍
Cache ID: 216::103

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