Affected: spice-vdagent

A flaw was found in the way the spice-vdagentd daemon handled file transfers from the host system to the virtual machine. Any unprivileged local guest user with access to the UNIX domain socket path `/run/spice-vdagentd/spice-vdagent-sock` could use this flaw to perform a memory denial of service for spice-vdagentd or even other processes in the VM system. The highest threat from this vulnerability is to system availability. This flaw affects spice-vdagent versions 0.20 and previous versions.

Affected: Ubuntu:18.04:LTS: spice-vdagent, Ubuntu:20.04:LTS: spice-vdagent

Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local attacker could possibly use this issue to cause SPICE vdagent to consume memory, resulting in a denial of service. (CVE-2020-25650)

Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local attacker could possibly use this issue to cause SPICE vdagent to consume memory, resulting in a denial of service, or obtain sensitive file contents. (CVE-2020-25651)

Matthias Gerstner discovered that SPICE vdagent incorrectly handled a large number of client connections. A local attacker could possibly use this issue to cause SPICE vdagent to consume resources, resulting in a denial of service. (CVE-2020-25652)

Matthias Gerstner discovered that SPICE vdagent incorrectly handled client connections. A local attacker could possibly use this issue to obtain sensitive information, paste clipboard contents, and transfer files into the active session. (CVE-2020-25653)