Ubuntu’s packaging of libvirt in 20.04 LTS created a control socket with world read and write permissions. An attacker could use this to overwrite arbitrary files or execute arbitrary code.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15708
Reference (s):
- https://usn.ubuntu.com/usn/usn-4452-1
- URL: https://usn.ubuntu.com/usn/usn-4452-1