CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.4 | $0-$5k | 0.00 |
A vulnerability was found in Xen up to 4.11.x (Virtualization Software). It has been rated as critical. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.
The bug was discovered 11/20/2018. The weakness was presented 12/08/2018 by Security Team (Matt) (Website). The advisory is available at securityfocus.com. This vulnerability is handled as CVE-2018-19966 since 12/07/2018. 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. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.
The vulnerability was handled as a non-public zero-day exploit for at least 17 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 119642 (openSUSE Security Update : xen (openSUSE-2018-1530)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171766 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2018:4070-1)).
Upgrading eliminates this vulnerability. A possible mitigation has been published 4 days after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (119642).
Product
Type
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: 7.5VulDB Meta Temp Score: 7.4
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: Access controlCWE: CWE-264
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 |
Nessus ID: 119642
Nessus Name: openSUSE Security Update : xen (openSUSE-2018-1530)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
11/20/2018 🔍12/07/2018 🔍
12/07/2018 🔍
12/07/2018 🔍
12/08/2018 🔍
12/08/2018 🔍
12/12/2018 🔍
12/13/2018 🔍
06/13/2023 🔍
Sources
Advisory: DLA 1949-1⛔Researcher: Security Team (Matt)
Status: Confirmed
CVE: CVE-2018-19966 (🔍)
SecurityFocus: 106182 - Xen Multiple Privilege Escalation and Denial of Service Vulnerabilities
Entry
Created: 12/08/2018 13:40Updated: 06/13/2023 16:50
Changes: 12/08/2018 13:40 (73), 04/19/2020 09:22 (7), 06/13/2023 16:50 (4)
Complete: 🔍
Cache ID: 18:792:103
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