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.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16872 | Issue Tracking Patch Third Party Advisory |
http://www.securityfocus.com/bid/106212 | Third Party Advisory VDB Entry |
https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html | Mailing List Third Party Advisory |
https://usn.ubuntu.com/3923-1/ | Third Party Advisory |
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html | Mailing List Third Party Advisory |
https://www.debian.org/security/2019/dsa-4454 | Third Party Advisory |
https://seclists.org/bugtraq/2019/May/76 | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJMTVGDLA654HNCDGLCUEIP36SNJEKK7/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN/ |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
Configuration 3 (hide)
|
Configuration 4 (hide)
|
Configuration 5 (hide)
|
Information
Published : 2018-12-13 13:29
Updated : 2023-02-12 15:32
NVD link : CVE-2018-16872
Mitre link : CVE-2018-16872
JSON object : View
CWE
CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
Products Affected
fedoraproject
- fedora
canonical
- ubuntu_linux
opensuse
- leap
debian
- debian_linux
qemu
- qemu