vulnwire
9.8crit

CVE-2016-9942

Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (app…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
3.8%
percentile 90%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

3.82% probability of exploitation in the next 30 days, higher than 90% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

  • securityfocus.com /bid/95170 · vdb-entry, x_refsource_BID, x_transferred
  • github.com /LibVNC/libvncserver/pull/137 · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-3753 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • security.gentoo.org /glsa/201702-24 · vendor-advisory, x_refsource_GENTOO, x_transferred
  • github.com /LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11 · x_refsource_CONFIRM, x_transferred
  • lists.debian.org /debian-lts-announce/2019/10/msg00042.html · mailing-list, x_refsource_MLIST, x_transferred
  • usn.ubuntu.com /4587-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred

Sources

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