The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file.
CVSS Details
- CVSS 3.0 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Sep 20, 2017 | Jan 23, 2017 |
| Debian | — | Upgrade xen | Dec 9, 2016 | Dec 7, 2016 |
| Freebsd | — | Upgrade xen-tools | Dec 4, 2016 | Dec 4, 2016 |
| Gentoo Linux | — | Upgrade app-emulation/xen.Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/xen-tools. | Oct 30, 2017 | Jan 23, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 22, 2016 |
| Suse | — | Upgrade xen-develUpgrade xen-doc-pdfUpgrade xenUpgrade xen-libs-32bitUpgrade xen-toolsUpgrade xen-tools-domuUpgrade xen-kmp-traceUpgrade xen-tools-xendomains-wait-diskUpgrade xen-doc-htmlUpgrade xen-kmp-paeUpgrade xen-kmp-defaultUpgrade xen-libs | Dec 9, 2016 | Dec 7, 2016 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Jan 23, 2017 |
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