Denial of service in libvirt
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-3840 |
| CWE-ID | CWE-476 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libvirt Universal components / Libraries / Libraries used by multiple products |
| Vendor | libvirt.org |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) NULL pointer dereference
EUVDB-ID: #VU18154
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-3840
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dreference error in libvirt in the way it processes interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service (DoS).
Update to version 5.0.0.
Vulnerable software versionslibvirt: 0.2.0 - 4.10.0
External linkshttp://libvirt.org/git/?p=libvirt.git&a=commitdiff&h=9ed175fbc2deecfdaeabca7bc77c7e7ae33a3377
http://libvirt.org/git/?p=libvirt.git&a=patch&h=9ed175fbc2deecfdaeabca7bc77c7e7ae33a3377
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
