Memory leak in QEMU - CVE-2017-5579
Published: March 15, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32083
CSH Severity: Medium
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-5579
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the serial_exit_core function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations. A remote attacker can perform a denial of service attack.
Affected software
QEMU
Gentoo Linux
Fedora
qemu (Alpine package)
qemu
Gentoo Linux
Fedora
qemu (Alpine package)
qemu
How to mitigate CVE-2017-5579
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
qemu (Alpine package) - addressed in versions 2.8.1-r1, 2.8.1.1-r0
qemu - addressed in versions 2.6.2-8.fc24, 2.7.1-6.fc25
qemu - addressed in versions 2.6.2-8.fc24, 2.7.1-6.fc25
External References
- http://git.qemu-project.org/?p=qemu.git;a=commit;h=8409dc884a201bf74b30a9d232b6bbdd00cb7e2b
- http://www.openwall.com/lists/oss-security/2017/01/24/8
- http://www.openwall.com/lists/oss-security/2017/01/25/3
- http://www.securityfocus.com/bid/95780
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security.gentoo.org/glsa/201702-28