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Sicherheit: Preisgabe von Informationen in x11vnc
Aktuelle Meldungen Distributionen
Name: Preisgabe von Informationen in x11vnc
ID: FEDORA-2021-c5b679877e
Distribution: Fedora
Plattformen: Fedora 32
Datum: Mi, 10. März 2021, 07:16
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29074
Applikationen: x11vnc

Originalnachricht

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Fedora Update Notification
FEDORA-2021-c5b679877e
2021-03-10 00:25:11.065319
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Name : x11vnc
Product : Fedora 32
Version : 0.9.16
Release : 3.fc32
URL : https://github.com/LibVNC/x11vnc
Summary : VNC server for the current X11 session
Description :
What WinVNC is to Windows x11vnc is to X Window System, i.e. a server which
serves the current X Window System desktop via RFB (VNC) protocol to the user.

Based on the ideas of x0rfbserver and on LibVNCServer it has evolved into
a versatile and productive while still easy to use program.

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Update Information:

This release fixes an insecure permissins of shared memory semgentes created by
an x11vnc server. Previously the segments were readable and writable for any
local user. Now they are accessible only to the user who executed the x11vnc
server.
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ChangeLog:

* Mon Mar 1 2021 Petr Pisar <ppisar@redhat.com> - 0.9.16-3
- Fix CVE-2020-29074 (insecure permissions on a shared memory) (bug #1933603)
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References:

[ 1 ] Bug #1933602 - CVE-2020-29074 x11vnc: insecure permissions on shm
https://bugzilla.redhat.com/show_bug.cgi?id=1933602
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-c5b679877e' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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