CVE-2018-7542
UnknownEPSS 0.40%
Last modified
CVE-2018-7542 is a vulnerability of currently unknown severity. An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 4.8.0, <= 4.10.0 |
| Debian | Debian Linux | 9.0 |
References
- https://www.debian.org/security/2018/dsa-4131Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-256.htmlVendor Advisory
- https://www.debian.org/security/2018/dsa-4131Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-256.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7542?
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
How severe is CVE-2018-7542?
Severity scoring for CVE-2018-7542 is pending analysis. The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7542?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2018-7542?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST