VNC: LibVNCServer rfbProcessClientNormalMessage Divide by Zero Denial of Service
This signature detects attempts to exploit a known vulnerability against LibVNCServer. A successful attack can result in a denial-of-service condition.
Extended Description
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier allows remote attackers to cause a denial of service (divide-by-zero error and server crash) via a zero value in the scaling factor in a (1) PalmVNCSetScaleFactor or (2) SetScale message.
Affected Products
Canonical ubuntu_linux
Short Name
VNC:LIBVNCSERVER-DIVBYZERO-DOS
Severity
Minor
Recommended
False
Recommended Action
Drop
Category
VNC
Keywords
CVE-2014-6054 CVE-2020-25708 Denial Divide LibVNCServer Service Zero by of rfbProcessClientNormalMessage
Release Date
10/14/2014
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3761
False Positive
Unknown
Vendors
Libvncserver
Debian
Canonical
CVSS Score
4.3
5.0