Vulnerability-Lookup

GHSA-6VP5-5GV4-MCQP

Vulnerability from github – Published: 2022-05-14 01:14 – Updated: 2022-05-14 01:14

Details

arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.

Severity

7.1 (High)


                  
                    CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2018-18021"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-10-07T06:29:00Z",
    "severity": "HIGH"
  },
  "details": "arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.",
  "id": "GHSA-6vp5-5gv4-mcqp",
  "modified": "2022-05-14T01:14:00Z",
  "published": "2022-05-14T01:14:00Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-18021"
    },
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  "severity": [
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      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
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  ]
}

CVE-2018-18021 (GCVE-0-2018-18021)

Vulnerability from cvelistv5 – Published: 2018-10-07 06:00 – Updated: 2024-08-05 11:01

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

13 references

URL	Tags
https://usn.ubuntu.com/3821-1/	vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/2a3f9345…	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2018/…	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan…	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:3656	vendor-advisoryx_refsource_REDHAT
https://github.com/torvalds/linux/commit/d26c25a9…	x_refsource_MISC
http://www.securityfocus.com/bid/105550	vdb-entryx_refsource_BID
https://usn.ubuntu.com/3821-2/	vendor-advisoryx_refsource_UBUNTU
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_MISC
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_MISC
https://www.debian.org/security/2018/dsa-4313	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3931-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3931-2/	vendor-advisoryx_refsource_UBUNTU

Date Public

2018-10-07 00:00

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.