ALSA-2021:1811

Source

https://errata.almalinux.org/8/ALSA-2021-1811.html

Import Source

https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2021:1811.json

Related

• CVE-2018-21247
• CVE-2019-20839
• CVE-2020-14397
• CVE-2020-14405
• CVE-2020-25708

Published

2021-05-18T06:09:01Z

Modified

2021-11-12T10:20:56Z

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