Bug 1849881 (CVE-2019-20840) - CVE-2019-20840 libvncserver: unaligned accesses in hybiReadAndDecode can lead to a crash
Summary: CVE-2019-20840 libvncserver: unaligned accesses in hybiReadAndDecode can lead...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-20840
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1849883 1849882
Blocks: 1849880
TreeView+ depends on / blocked
 
Reported: 2020-06-23 06:28 UTC by Marian Rehak
Modified: 2020-06-30 17:20 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2020-06-30 17:20:35 UTC


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Description Marian Rehak 2020-06-23 06:28:09 UTC
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.

Upstream Reference:

https://github.com/LibVNC/libvncserver/commit/0cf1400c61850065de590d403f6d49e32882fd76

Comment 1 Marian Rehak 2020-06-23 06:28:34 UTC
Created libvncserver tracking bugs for this issue:

Affects: epel-7 [bug 1849883]
Affects: fedora-all [bug 1849882]

Comment 2 Product Security DevOps Team 2020-06-30 17:20:35 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-20840


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