CVE-2011-1775 Security feature bypass in n/a
Man-in-the-middle attackers can spoof TLS VNC servers by bypassing X.509 certificate verification in the TigerVNC client.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2011-1775?
CVE-2011-1775 is a medium-severity vulnerability in n/a, published on 26 May 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate.
Weakness: CWE-20
Which versions are affected by CVE-2011-1775?
It affects 1 product.
Linux distribution packages (5)
tigervnc Red Hat:enterprise_linux:6::server | All versions | 0:1.0.90-0.15.20110314svn4359.el6_1.1 |
tigervnc-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:1.0.90-0.15.20110314svn4359.el6_1.1 |
tigervnc-server Red Hat:enterprise_linux:6::server | All versions | 0:1.0.90-0.15.20110314svn4359.el6_1.1 |
tigervnc-server-applet Red Hat:enterprise_linux:6::server | All versions | 0:1.0.90-0.15.20110314svn4359.el6_1.1 |
tigervnc-server-module Red Hat:enterprise_linux:6::server | All versions | 0:1.0.90-0.15.20110314svn4359.el6_1.1 |
Products include Tigervnc Tigervnc.
How do I fix CVE-2011-1775?
Apply the vendor's patch.
Is CVE-2011-1775 being exploited?
There is no known exploitation of CVE-2011-1775 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-g8f8-5m52-5p35, RHSA-2011:0871.