CVE-2011-1775 — Improper Input Validation in Tigervnc

CWE-20 — Improper Input Validation5 documents5 sources
Severity
5.8MEDIUMNVD
EPSS
0.5%
top 35.03%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
TigervncDebian Tigervnc
Timeline
PublishedMay 26
Latest updateMay 17

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 vector

AV:N/AC:M/C:P/I:P/A:NExploitability: 8.6 | Impact: 4.9

Affected Packages2 packages

🔴Vulnerability Details

1
GHSA
GHSA-g8f8-5m52-5p35: The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS↗2022-05-17
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📋Vendor Advisories

2
Red Hat
tigervnc: vncviewer can send password to server without proper validation of the X.509 certificate↗2011-05-04
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Debian
CVE-2011-1775: tigervnc - The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncv...↗2011
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💬Community

1
Bugzilla
CVE-2011-1775 tigervnc: vncviewer can send password to server without proper validation of the X.509 certificate↗2011-05-05
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CVE-2011-1775 — Improper Input Validation in Tigervnc | cvebase