CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.5 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel up to 4.20.5 (Operating System). It has been rated as critical. Affected by this issue is an unknown code of the component KVM. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:
The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.
The bug was discovered 02/08/2019. The weakness was presented 03/21/2019 (Website). The advisory is available at lists.fedoraproject.org. This vulnerability is handled as CVE-2019-7221 since 01/30/2019. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/04/2023).
The vulnerability was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172088 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2019:0541-1)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
See 113072, 123804, 128011 and 128084 for similar entries.
Product
Type
Vendor
Name
Version
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: 6.5VulDB Meta Temp Score: 6.5
VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Patch: git.kernel.org
Timeline
12/19/2018 🔍01/30/2019 🔍
02/08/2019 🔍
03/21/2019 🔍
03/22/2019 🔍
08/04/2023 🔍
Sources
Vendor: kernel.orgAdvisory: RHSA-2019:0818
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2019-7221 (🔍)
SecurityFocus: 106253 - Linux Kernel CVE-2018-16884 Denial of Service Vulnerability
See also: 🔍
Entry
Created: 03/22/2019 08:52Updated: 08/04/2023 08:56
Changes: 03/22/2019 08:52 (63), 05/18/2020 17:41 (3), 08/04/2023 08:56 (4)
Complete: 🔍
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