CVE-2016-9942 (GCVE-0-2016-9942)

Vulnerability from cvelistv5 – Published: 2016-12-31 18:00 – Updated: 2024-08-06 03:07
VLAI
Summary
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.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://www.securityfocus.com/bid/95170 vdb-entryx_refsource_BID
https://github.com/LibVNC/libvncserver/pull/137 x_refsource_CONFIRM
http://www.debian.org/security/2017/dsa-3753 vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/201702-24 vendor-advisoryx_refsource_GENTOO
https://github.com/LibVNC/libvncserver/releases/t… x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4587-1/ vendor-advisoryx_refsource_UBUNTU
Date Public
2016-12-31 00:00
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-01-13T21:16:23+00:00",
      "cve": "CVE-2016-9942",
      "id": "CVE-2016-9942",
      "initial_release_date": "2016-11-14T00:00:00+00:00",
      "product_status:known_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libvncserver: Heap-based buffer overflow in ultra.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-9942.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.