CVE-2018-20750

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.
Overview
  • CVE ID
  • CVE-2018-20750
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-01-30T18:29:00
  • Last Modified Date
  • 2022-03-09T21:55:09
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* 1 OR 0.9.12
AND
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.0.0 3.2.1.0
cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.openwall.com/lists/oss-security/2018/12/10/8 Exploit Mailing List Third Party Advisory
https://github.com/LibVNC/libvncserver/issues/273 Issue Tracking Third Party Advisory
https://github.com/LibVNC/libvncserver/commit/09e8fc02f59f16e2583b34fe1a270c238bd9ffec Patch Third Party Advisory
https://usn.ubuntu.com/3877-1/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html Mailing List Third Party Advisory
http://www.securityfocus.com/bid/106825 Broken Link
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html Mailing List Third Party Advisory
https://usn.ubuntu.com/4547-1/ Third Party Advisory
https://usn.ubuntu.com/4587-1/ Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-20750
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20750
History
Created Old Value New Value Data Type Notes
2022-05-10 15:46:39 Added to TrackCVE
2022-12-03 16:59:32 2019-01-30T18:29Z 2019-01-30T18:29:00 CVE Published Date updated
2022-12-03 16:59:32 2022-03-09T21:55:09 CVE Modified Date updated
2022-12-03 16:59:32 Analyzed Vulnerability Status updated