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7.5
CVSSv2

CVE-2018-20749

Published: 30/01/2019 Updated: 09/03/2022
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
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Vulnerability Summary

LibVNC prior to 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.

Vulnerability Trend

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libvnc project libvncserver

canonical ubuntu linux 14.04

canonical ubuntu linux 16.04

canonical ubuntu linux 18.04

canonical ubuntu linux 18.10

debian debian linux 8.0

debian debian linux 9.0

siemens simatic_itc1500_firmware

siemens simatic_itc1500_pro_firmware

siemens simatic_itc1900_firmware

siemens simatic_itc1900_pro_firmware

siemens simatic_itc2200_firmware

siemens simatic_itc2200_pro_firmware

Vendor Advisories

Debian CVElist Bug Report Logs: libvncserver: CVE-2018-20748 CVE-2018-20749 CVE-2018-20750
Debian Bug report logs - #920941 libvncserver: CVE-2018-20748 CVE-2018-20749 CVE-2018-20750 Package: src:libvncserver; Maintainer for src:libvncserver is Peter Spiess-Knafl <dev@spiessknaflat>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 30 Jan 2019 18:21:01 UTC Severity: grave Tags: patch, secu ...
Ubuntu Security Notice: libvncserver vulnerabilities
Several security issues were fixed in LibVNCServer ...

ICS Advisories

Siemens SIMATIC ITC
Critical Infrastructure Sectors: Chemical, Critical Manufacturing, Energy, Food and Agriculture, Water and Wastewater Systems

References

CWE-787https://www.openwall.com/lists/oss-security/2018/12/10/8https://github.com/LibVNC/libvncserver/issues/273https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707https://usn.ubuntu.com/3877-1/https://lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlhttp://www.securityfocus.com/bid/106825https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlhttps://usn.ubuntu.com/4547-1/https://usn.ubuntu.com/4587-1/https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=920941https://usn.ubuntu.com/3877-1/https://nvd.nist.govhttps://www.cisa.gov/uscert/ics/advisories/icsa-21-350-12
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2022-38028CVE-2024-32406CVE-2024-25624IMAPCVE-2024-2310CVE-2024-0874CVE-2024-20359XXEremote code execution
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