REDHAT-BUG-1418944
First published: Fri Feb 03 2017(Updated: )
It was found that gtk-vnc does not properly check boundaries of subrectangle-containing tiles. A malicious server can use this to overwrite parts of the client memory, potentially leading to code execution under privileges of the user running the VNC client. Upstream bug: <a href="https://bugzilla.gnome.org/show_bug.cgi?id=778048">https://bugzilla.gnome.org/show_bug.cgi?id=778048</a> Upstream patch: <a href="https://git.gnome.org/browse/gtk-vnc/commit/?id=ea0386933214c9178">https://git.gnome.org/browse/gtk-vnc/commit/?id=ea0386933214c9178</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GTK-VNC |
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Reference Links
- https://bugzilla.gnome.org/show_bug.cgi?id=778048
- https://git.gnome.org/browse/gtk-vnc/commit/?id=ea0386933214c9178
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1418955
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1418956
- http://openwall.com/lists/oss-security/2017/02/05/5
- https://bugzilla.gnome.org/show_bug.cgi?id=778048#c1
- https://access.redhat.com/security/cve/CVE-2017-5884
- https://access.redhat.com/errata/RHSA-2017:2258
- https://bugzilla.redhat.com/show_bug.cgi?id=1418944
Frequently Asked Questions
What is the severity of REDHAT-BUG-1418944?
The severity of REDHAT-BUG-1418944 is high due to the potential for code execution and memory corruption.
How do I fix REDHAT-BUG-1418944?
To fix REDHAT-BUG-1418944, update gtk-vnc to the latest patched version as recommended by the vendor.
What are the potential impacts of REDHAT-BUG-1418944?
The potential impacts of REDHAT-BUG-1418944 include unauthorized code execution and compromise of user privileges.
Who is affected by REDHAT-BUG-1418944?
Users running a vulnerable version of gtk-vnc are affected by REDHAT-BUG-1418944.
What causes the vulnerability in REDHAT-BUG-1418944?
REDHAT-BUG-1418944 is caused by improper boundary checks in the handling of subrectangle-containing tiles.
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2017-5884
- agent/references
- agent/severity
- agent/description
- agent/event
- agent/trending
- agent/source
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/gnome
- canonical/gtk-vnc