CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
83.4%
LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a
CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability
allows attacker to consume excessive amount of resources like CPU and RAM
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | italc | < 1:3.0.3+dfsg1-3ubuntu0.1 | UNKNOWN |
ubuntu | 16.04 | noarch | italc | < 1:2.0.2+dfsg1-4ubuntu0.1 | UNKNOWN |
ubuntu | 18.04 | noarch | libvncserver | < 0.9.11+dfsg-1ubuntu1.1 | UNKNOWN |
ubuntu | 18.10 | noarch | libvncserver | < 0.9.11+dfsg-1.1ubuntu0.1 | UNKNOWN |
ubuntu | 14.04 | noarch | libvncserver | < 0.9.9+dfsg-1ubuntu1.4 | UNKNOWN |
ubuntu | 16.04 | noarch | libvncserver | < 0.9.10+dfsg-3ubuntu0.16.04.3 | UNKNOWN |
ubuntu | 18.04 | noarch | ssvnc | < any | UNKNOWN |
ubuntu | 16.04 | noarch | ssvnc | < 1.9.29-2+deb8u1build0.16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | tightvnc | < any | UNKNOWN |
ubuntu | 20.04 | noarch | tightvnc | < any | UNKNOWN |
ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-031-libvnc-infinite-loop/
launchpad.net/bugs/cve/CVE-2018-20021
nvd.nist.gov/vuln/detail/CVE-2018-20021
security-tracker.debian.org/tracker/CVE-2018-20021
ubuntu.com/security/notices/USN-3877-1
ubuntu.com/security/notices/USN-4547-1
ubuntu.com/security/notices/USN-4547-2
ubuntu.com/security/notices/USN-4587-1
www.cve.org/CVERecord?id=CVE-2018-20021
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
83.4%