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FreeBSD: VID-64BE967A-D379-11E6-A071-001E67F15F5A (CVE-2016-9942): libvncserver -- multiple buffer overflows

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FreeBSD: VID-64BE967A-D379-11E6-A071-001E67F15F5A (CVE-2016-9942): libvncserver -- multiple buffer overflows

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
11/24/2016
Created
07/25/2018
Added
01/10/2017
Modified
05/07/2019

Description

Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.

Solution(s)

  • freebsd-upgrade-package-libvncserver

References

  • DLA-777-1
  • DSA-3753
  • CVE-2016-9942
  • USN-3171-1

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