CVE-2017-7394
HighSummary
In TigerVNC 1.7.1, unauthenticated users can crash the server by sending long usernames.
Risk Assessment
An attacker can exploit this vulnerability to disrupt server operations, potentially leading to service downtime.
Recommendation
It is recommended to upgrade to a newer version of TigerVNC to mitigate the risk associated with this vulnerability.
Other vulnerabilities in TigerVNC 1.7.1
See all- CVE-2017-7396High
In TigerVNC version 1.7.1, a vulnerability allows an unauthenticated client to cause a small memory leak on the server.
- CVE-2017-7393High
In TigerVNC 1.7.1, an authenticated client can cause a double free, leading to denial of service or potentially code execution.
- CVE-2017-7392High
In TigerVNC 1.7.1, there is a vulnerability that allows an unauthenticated client to cause a small memory leak on the server.
- CVE-2016-10207High
The Xvnc server in TigerVNC allows remote attackers to cause a denial of service by terminating a TLS handshake early, leading to invalid memory access and server crash.
- CVE-2014-8240High
Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow.
- CVE-2017-5581Critical
Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before version 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.
- CVE-2014-8241Critical
XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a similar issue to CVE-2014-6052.
Original NVD description (English source)
In TigerVNC 1.7.1 (SSecurityPlain.cxx SSecurityPlain::processMsg), unauthenticated users can crash the server by sending long usernames.