Use-after-free error in QEMU - CVE-2018-19364
Published: December 17, 2018
Vulnerability identifier: #VU16557
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-19364
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.
The vulnerability exists due to use-after-free condition in the VirtFS component. A remote attacker can access the system and maliciously updatу the fid path in worker threads by using the v9fs_path_copy() function while accessing files on a shared host directory, trigger memory corruption and cause the service to crash.
How to mitigate CVE-2018-19364
Install update from vendor's website.