Linux Kernel Extended BPF Verifier kernel/bpf/verifier.c input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.3 | $0-$5k | 0.00 |
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 vulnerability database at Tenable (105433). The entries 110931, 110932, 110933 and 111025 are related to this item.
Product
Type
Vendor
Name
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: 4.4VulDB 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: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
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: 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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: git.kernel.org
Timeline
11/23/2017 🔍12/23/2017 🔍
12/23/2017 🔍
12/23/2017 🔍
12/26/2017 🔍
12/26/2017 🔍
12/26/2017 🔍
12/27/2017 🔍
12/27/2017 🔍
01/19/2023 🔍
Sources
Vendor: kernel.orgAdvisory: usn-3523-2
Status: Confirmed
CVE: CVE-2017-17862 (🔍)
OVAL: 🔍
SecurityTracker: 1040057
SecurityFocus: 102325 - Linux Kernel CVE-2017-17862 Local Denial of Service Vulnerability
See also: 🔍
Entry
Created: 12/27/2017 09:02Updated: 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: 🔍
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