Vulnerability identifier: #VU27545
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-399
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
libvirt
Universal components / Libraries /
Libraries used by multiple products
Vendor: libvirt.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources with the qemu/qemu_driver.c in libvirt while holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).
Mitigation
Install updates from vendor's website.
Vulnerable software versions
libvirt: 4.0.0 - 5.10.0
External links
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953078
http://bugzilla.redhat.com/show_bug.cgi?id=1809740
http://libvirt.org/git/?p=libvirt.git;a=commit;h=a663a860819287e041c3de672aad1d8543098ecc
http://security-tracker.debian.org/tracker/CVE-2019-20485
http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1730509.html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.