CVE-2018-16872 (GCVE-0-2018-16872)

Vulnerability from cvelistv5 – Published: 2018-12-13 21:00 – Updated: 2024-08-05 10:32
VLAI
Summary
A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn't consider that the underlying filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS.
Severity
5 (Medium)
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1088 records in the last 180 days details
References
URL Tags
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/106212 vdb-entryx_refsource_BID
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://usn.ubuntu.com/3923-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://www.debian.org/security/2019/dsa-4454 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/May/76 mailing-listx_refsource_BUGTRAQ
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
Impacted products
Vendor Product Version CPE status
[UNKNOWN] QEMU: Affected: n/a
guessed Create a notification for this product.
Date Public
2018-12-13 00:00
Show details on NVD website
To clipboard 

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            "value": "A flaw was found in qemu Media Transfer Protocol (MTP). The code opening files in usb_mtp_get_object and usb_mtp_get_partial_object and directories in usb_mtp_object_readdir doesn\u0027t consider that the underlying filesystem may have changed since the time lstat(2) was called in usb_mtp_object_alloc, a classical TOCTTOU problem. An attacker with write access to the host filesystem shared with a guest can use this property to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. Access to the filesystem may be local or via a network share protocol such as CIFS."
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        "id": "CVE-2018-16872",
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      "cve": "CVE-2018-16872",
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      "version": "45"
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  }
}



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Sightings

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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.
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Vulnerability timeline

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