VDB
CVE-2020-27671
CVE-2020-27671
PUBLISHED
An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.
EPSS 0.07% · 22.0th percentile
Risk Scores
EPSS Score
0.07%
22.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | xen | 0, 4.5.1-0ubuntu1, 4.5.1-0ubuntu2 |
| Ubuntu:18.04:LTS | xen | 0, 4.9.2-0ubuntu1, 4.9.0-0ubuntu4 |
| Ubuntu:20.04:LTS | xen | 4.9.2-0ubuntu2, 4.9.2-0ubuntu6, 4.9.2-0ubuntu7 |
Exploit Intelligence
- CIRCL seen: CVE-2020-27671 (circl-sighting)
- http://xenbits.xen.org/xsa/advisory-346.html (circl)
- https://xenbits.xen.org/xsa/advisory-346.html (circl)
- openSUSE-SU-2020:1783 (circl)
- openSUSE-SU-2020:1844 (circl)
- GLSA-202011-06 (circl)
- FEDORA-2020-6dd36a716c (circl)
- DSA-4804 (circl)
- [oss-security] 20210119 Xen Security Advisory 346 v3 (CVE-2020-27671) - undue deferral of IOMMU TLB flushes (circl)
Timeline
- Oct 22, 2020 CVE Published
- Nov 24, 2020 PoC Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-27671 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-346.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-27671 third-party-advisory