VNC: UltraVNC VNC Server File Transfer Offer Handler Heap-based Buffer Overflow
This signature detects attempts to exploit a known vulnerability in the VNC Server of UltraVNC. A successful attack can lead to a buffer overflow and arbitrary remote code execution within the context of the VNC Server of UltraVNC.
Extended Description
UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially in result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
Affected Products
Uvnc ultravnc
References
CVE: CVE-2019-8274
Short Name
VNC:OVERFLOW:ULTRAVNC-HEAP
Severity
Major
Recommended
True
Recommended Action
Drop
Category
VNC
Keywords
Buffer CVE-2019-8274 File Handler Heap-based Offer Overflow Server Transfer UltraVNC VNC
Release Date
06/10/2019
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
srx-branch-12.3
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx-12.3
vmx-19.3
srx-12.3
Sigpack Version
3590
False Positive
Unknown
Vendors
Uvnc
Siemens
CVSS Score
7.5