CVE-2021-3308
Summary
| CVE | CVE-2021-3308 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-01-26 20:15:00 UTC |
| Updated | 2023-11-07 03:37:00 UTC |
| Description | An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors used by the MSI(-X) entries that the guest might had enabled, and hence will lead to vector exhaustion on the system, not allowing further PCI pass through devices to work properly. HVM guests with PCI pass through devices can mount a Denial of Service (DoS) attack affecting the pass through of PCI devices to other guests or the hardware domain. In the latter case, this would affect the entire host. |
Risk And Classification
Problem Types: NVD-CWE-noinfo
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Fedoraproject | Fedora | 32 | All | All | All |
| Operating System | Fedoraproject | Fedora | 32 | All | All | All |
| Operating System | Xen | Xen | 4.12.3 | All | All | All |
| Operating System | Xen | Xen | 4.12.4 | All | All | All |
| Operating System | Xen | Xen | 4.12.3 | All | All | All |
| Operating System | Xen | Xen | 4.12.4 | All | All | All |
| Operating System | Xen | Xen | All | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] Fedora 32 Update: xen-4.13.2-6.fc32 - package-announce - Fedora Mailing-Lists | FEDORA | lists.fedoraproject.org | Third Party Advisory |
| XSA-360 - Xen Security Advisories | MISC | xenbits.xen.org | Patch, Vendor Advisory |
| oss-security - Xen Security Advisory 360 v2 (CVE-2021-3308) - IRQ vector leak on x86 | MLIST | www.openwall.com | Mailing List, Patch, Third Party Advisory |
| [SECURITY] Fedora 32 Update: xen-4.13.2-6.fc32 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| Xen: Multiple vulnerabilities (GLSA 202107-30) — Gentoo security | GENTOO | security.gentoo.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 174871 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:1028-1)
- 174875 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:1023-1)
- 174972 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:1460-1)
- 180518 Debian Security Update for xen (CVE-2021-3308)
- 500797 Alpine Linux Security Update for xen
- 501516 Alpine Linux Security Update for xen
- 501793 Alpine Linux Security Update for xen
- 504540 Alpine Linux Security Update for xen
- 710038 Gentoo Linux Xen Multiple vulnerabilities (GLSA 202107-30)
- 751087 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:2955-1)