MGASA-2014-0397

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MGASA-2014-0397

Summary: Updated libvncserver & remmina packages fix security vulnerabilities

Details: Updated libvncserver and remmina packages fix security vulnerabilities: A malicious VNC server can trigger incorrect memory management handling by advertising a large screen size parameter to the VNC client. This would result in multiple memory corruptions and could allow remote code execution on the VNC client (CVE-2014-6051, CVE-2014-6052). A malicious VNC client can trigger multiple DoS conditions on the VNC server by advertising a large screen size, ClientCutText message length and/or a zero scaling factor parameter (CVE-2014-6053, CVE-2014-6054). A malicious VNC client can trigger multiple stack-based buffer overflows by passing a long file and directory names and/or attributes (FileTime) when using the file transfer message feature (CVE-2014-6055). The remmina package had been built with a bundled copy of libvncserver. It has been rebuilt against the system libvncserver library to resolve these issues.

References: https://advisories.mageia.org/MGASA-2014-0397.html, https://bugs.mageia.org/show_bug.cgi?id=14155, http://www.ocert.org/advisories/ocert-2014-007.html, https://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html