Summary
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.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | libvncserver | 0.9.11-17.el8 |
| AlmaLinux · 8 | libvncserver-devel | 0.9.11-17.el8 |
Vulnerabilities 5
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Unscored —
An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) …
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Unscored —
libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
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Unscored —
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.
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Unscored —
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.
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Unscored —
A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a spec…