CVE-2019-19577
published 2019-12-11CVE-2019-19577: An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering…
PriorityP432high7.2CVSS 3.1
AVPACLPRHUINSCCHIHAH
EPSS
0.50%
39.7th percentile
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak of 4kb per guest boot, under memory pressure. Only Xen on AMD CPUs is vulnerable. Xen running on Intel CPUs is not vulnerable. ARM systems are not vulnerable. Only systems where guests are given direct access to physical devices are vulnerable. Systems which do not use PCI pass-through are not vulnerable. Only HVM guests can exploit the vulnerability. PV and PVH guests cannot. All versions of Xen with IOMMU support are vulnerable.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.11.3+24-g14b62ab3e5-1 (bookworm) | xen 4.11.3+24-g14b62ab3e5-1 (bookworm) |
| fedoraproject | fedora | — | — |
| xen | xen | <= 4.12.1 | — |
| xen | xen | >= 0 < 4.11.3+24-g14b62ab3e5-1 | 4.11.3+24-g14b62ab3e5-1 |
| xen | xen | >= 0 < 4.11.3+24-g14b62ab3e5-1 | 4.11.3+24-g14b62ab3e5-1 |
| xen | xen | >= 0 < 4.11.3+24-g14b62ab3e5-1 | 4.11.3+24-g14b62ab3e5-1 |
| xen | xen | >= 0 < 4.11.3+24-g14b62ab3e5-1 | 4.11.3+24-g14b62ab3e5-1 |
CVSS provenance
nvdv3.17.2HIGHCVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.2HIGH
vendor_debian7.2HIGH
vendor_redhat7.2HIGH
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GHSA
GHSA-6gpv-cjwj-gqjp: An issue was discovered in Xen through 4
ghsa_unreviewed·2022-05-24
CVE-2019-19577 [HIGH] GHSA-6gpv-cjwj-gqjp: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak
OSV
CVE-2019-19577: An issue was discovered in Xen through 4
osv·2019-12-11·CVSS 7.2
CVE-2019-19577 [HIGH] CVE-2019-19577: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak
Red Hat
xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
vendor_redhat·2019-12-11·CVSS 7.2
CVE-2019-19577 [HIGH] CWE-266 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be v
Debian
CVE-2019-19577: xen - An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS user...
vendor_debian·2019·CVSS 7.2
CVE-2019-19577 [HIGH] CVE-2019-19577: xen - An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS user...
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2) [fedora-all]
bugzilla·2019-12-11·CVSS 7.2
CVE-2019-19577 [HIGH] CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2) [fedora-all]
CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2) [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue a
Bugzilla
CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
bugzilla·2019-11-29·CVSS 7.2
CVE-2019-19577 [HIGH] CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
CVE-2019-19577 xen: vulnerability in dynamic height handling for AMD IOMMU pagetables (XSA-311 v2)
An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34HBFTYNMQMWIO2GGK7DB6KV4M6R5YPV/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5R73AYE53QA32KTMHUVKCX6E52CIS43/https://seclists.org/bugtraq/2020/Jan/21https://security.gentoo.org/glsa/202003-56https://www.debian.org/security/2020/dsa-4602https://xenbits.xen.org/xsa/advisory-311.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34HBFTYNMQMWIO2GGK7DB6KV4M6R5YPV/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5R73AYE53QA32KTMHUVKCX6E52CIS43/https://seclists.org/bugtraq/2020/Jan/21https://security.gentoo.org/glsa/202003-56https://www.debian.org/security/2020/dsa-4602https://xenbits.xen.org/xsa/advisory-311.html
2019-12-11
Published