UBUNTU-CVE-2017-7493

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    UBUNTU-CVE-2017-7493

    Published: 17 May 2017Last Modified: 4 Feb 2026
    Upstream:
    CVE-2017-7493
    Aliases:
    USN-3414-1

    Summary:

    Details: Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.

    References: https://ubuntu.com/security/CVE-2017-7493, https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html, http://seclists.org/oss-sec/2017/q2/278, https://ubuntu.com/security/notices/USN-3414-1, https://www.cve.org/CVERecord?id=CVE-2017-7493

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu1.35?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.0+dfsg-2ubuntu1.35

    Affected versions

    1.5.0+dfsg-3ubuntu5
    1.5.0+dfsg-3ubuntu6

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High