suse-su-2021:1460-1
Vulnerability from csaf_suse
Published
2021-04-30 11:33
Modified
2021-04-30 11:33
Summary
Security update for xen
Notes
Title of the patch
Security update for xen
Description of the patch
This update for xen fixes the following issues:
- CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack (bsc#1178591, XSA-351)
- CVE-2021-3308: IRQ vector leak on x86 (bsc#1181254, XSA-360)
- CVE-2021-28687: HVM soft-reset crashes toolstack (bsc#1183072, XSA-368)
- L3: conring size for XEN HV's with huge memory to small (bsc#1177204).
- kdump of HVM fails, soft-reset not handled by libxl (bsc#1179148)
- openQA job causes libvirtd to dump core when running kdump inside domain (bsc#1181989).
- Upstream bug fixes (bsc#1027519)
Patchnames
SUSE-2021-1460,SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-1460,SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-1460,SUSE-SLE-Product-SLES-15-SP1-BCL-2021-1460,SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-1460,SUSE-SLE-Product-SLES_SAP-15-SP1-2021-1460,SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-1460,SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-1460,SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-1460,SUSE-Storage-6-2021-1460
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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"threats": [
{
"category": "impact",
"date": "2021-04-30T11:33:12Z",
"details": "moderate"
}
],
"title": "CVE-2020-28368"
},
{
"cve": "CVE-2021-28687",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-28687"
}
],
"notes": [
{
"category": "general",
"text": "HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of them. When the \"soft reset\" feature was implemented, the libxl__domain_suspend_state structure didn\u0027t require any initialization or disposal. At some point later, an initialization function was introduced for the structure; but the \"soft reset\" path wasn\u0027t refactored to call the initialization function. When a guest nwo initiates a \"soft reboot\", uninitialized data structure leads to an assert() when later code finds the structure in an unexpected state. The effect of this is to crash the process monitoring the guest. How this affects the system depends on the structure of the toolstack. For xl, this will have no security-relevant effect: every VM has its own independent monitoring process, which contains no state. The domain in question will hang in a crashed state, but can be destroyed by `xl destroy` just like any other non-cooperating domain. For daemon-based toolstacks linked against libxl, such as libvirt, this will crash the toolstack, losing the state of any in-progress operations (localized DoS), and preventing further administrator operations unless the daemon is configured to restart automatically (system-wide DoS). If crashes \"leak\" resources, then repeated crashes could use up resources, also causing a system-wide DoS.",
"title": "CVE description"
}
],
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"title": "CVE-2021-28687"
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{
"cve": "CVE-2021-3308",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-3308"
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"notes": [
{
"category": "general",
"text": "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.",
"title": "CVE description"
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
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"threats": [
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"details": "moderate"
}
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"title": "CVE-2021-3308"
}
]
}
Loading…
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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