Vulnerability identifier: #VU48699
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-369
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
LibVNCServer
Server applications /
Remote management servers, RDP, SSH
Vendor: LibVNC
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to divide by zero error when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service. A remote attacker can pass specially crafted file to the application and crash it.
Mitigation
Install update from vendor's website.
Vulnerable software versions
LibVNCServer: 0.9.0 - 0.9.12
External links
http://bugzilla.redhat.com/show_bug.cgi?id=1896739
http://github.com/LibVNC/libvncserver/issues/409
http://github.com/LibVNC/libvncserver/commit/673c07a75ed844d74676f3ccdcfdc706a7052dba
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.