CVE-2018-1087 (GCVE-0-2018-1087)

Vulnerability from cvelistv5 – Published: 2018-05-15 16:00 – Updated: 2024-08-05 03:51
VLAI?
Summary
kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.
Severity ?
8 (High)
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
https://access.redhat.com/errata/RHSA-2018:1347 vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
http://www.securitytracker.com/id/1040862 vdb-entryx_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2018:1348 vendor-advisoryx_refsource_REDHAT
https://www.debian.org/security/2018/dsa-4196 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:1355 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1345 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/vulnerabilitie… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:1318 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1524 vendor-advisoryx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2018/05/08/5 x_refsource_MISC
http://www.securityfocus.com/bid/104127 vdb-entryx_refsource_BID
https://usn.ubuntu.com/3641-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3641-1/ vendor-advisoryx_refsource_UBUNTU
Impacted products
Vendor Product Version
kernel KVM Affected: kernel 4.16
Affected: kernel 4.16-rc7
Affected: kernel 4.17-rc1
Affected: kernel 4.17-rc2
Affected: kernel 4.17-rc3
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      "id": "CVE-2018-1087",
      "lastModified": "2024-11-21T03:59:09.197",
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.