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    CVE-2018-12617

    qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.

    Published:Jun 21, 2018
    Last Modified:Nov 21, 2024
    EPS:Jun 21, 2018
    EPSS Score:0.29985
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Qemu
    Product
    Qemu

    Exploits

    https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6https://www.exploit-db.com/exploits/44925/https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6https://www.exploit-db.com/exploits/44925/https://www.exploit-db.com/exploits/44925

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
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    References

    http://www.securityfocus.com/bid/104531
    https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
    https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html
    https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html
    https://seclists.org/bugtraq/2019/May/76
    https://usn.ubuntu.com/3826-1/
    https://www.debian.org/security/2019/dsa-4454
    https://www.exploit-db.com/exploits/44925/
    http://www.securityfocus.com/bid/104531
    https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
    https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html
    https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html
    https://seclists.org/bugtraq/2019/May/76
    https://usn.ubuntu.com/3826-1/
    https://www.debian.org/security/2019/dsa-4454
    https://www.exploit-db.com/exploits/44925/

    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