VNC: UltraVNC VNC Server File Transfer Request Handler Stack-based Buffer Overflow
This signature detects attempts to exploit a known vulnerability in the VNC Server of UltraVNC. A successful attack can result in a denial-of-service condition.
Extended Description
UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service (DoS). This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
Affected Products
Uvnc ultravnc
References
CVE: CVE-2019-8276
Short Name
VNC:OVERFLOW:ULTRAVNC-STACK
Severity
Major
Recommended
True
Recommended Action
Drop
Category
VNC
Keywords
Buffer CVE-2019-8276 File Handler Overflow Request Server Stack-based Transfer UltraVNC VNC
Release Date
06/20/2019
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
3590
False Positive
Unknown
Vendors
Uvnc
Siemens
CVSS Score
5.0