VulnerabilityModified
CVE-2011-1775
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…
MEDIUM 5.8EPSS 1.29%
Does this matter?
Lower severity and a low EPSS score (1.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
- EPSS
- 1.29% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- tigervnc/tigervnc
- Source
- secalert@redhat.com
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html
- http://openwall.com/lists/oss-security/2011/05/06/2
- http://openwall.com/lists/oss-security/2011/05/09/7
- http://secunia.com/advisories/44939
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01342.html
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01345.html
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01347.html
- http://www.redhat.com/support/errata/RHSA-2011-0871.html
- http://www.securityfocus.com/bid/47738
- https://bugzilla.redhat.com/show_bug.cgi?id=702470
- https://bugzilla.redhat.com/show_bug.cgi?id=702672
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html
- http://openwall.com/lists/oss-security/2011/05/06/2
- http://openwall.com/lists/oss-security/2011/05/09/7
- http://secunia.com/advisories/44939
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01342.html
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01345.html
- http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01347.html
- http://www.redhat.com/support/errata/RHSA-2011-0871.html
- http://www.securityfocus.com/bid/47738
- https://bugzilla.redhat.com/show_bug.cgi?id=702470
- https://bugzilla.redhat.com/show_bug.cgi?id=702672
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.