ALSA-2021:1811

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ALSA-2021:1811

Summary: Moderate: libvncserver security update

Details: LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Security Fix(es): * libvncserver: uninitialized memory contents are vulnerable to Information Leak (CVE-2018-21247) * libvncserver: buffer overflow in ConnectClientToUnixSock() (CVE-2019-20839) * libvncserver: libvncserver/rfbregion.c has a NULL pointer dereference (CVE-2020-14397) * libvncserver: libvncclient/rfbproto.c does not limit TextChat size (CVE-2020-14405) * libvncserver: libvncserver/rfbserver.c has a divide by zero which could result in DoS (CVE-2020-25708) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

References: https://errata.almalinux.org/8/ALSA-2021-1811.html, https://vulners.com/cve/CVE-2018-21247, https://vulners.com/cve/CVE-2019-20839, https://vulners.com/cve/CVE-2020-14397, https://vulners.com/cve/CVE-2020-14405, https://vulners.com/cve/CVE-2020-25708