High severity · published Dec 19, 2018
CVE-2018-20023
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack…
7.5
CVSS
2.5%
EPSS
No
On KEV
Description
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
LI
Libvncserver · Libvnc Project
before 0.9.12 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20023
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20023
Third Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/
Mailing List
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
security.gentoo.org
https://security.gentoo.org/glsa/201908-05
Third Party Advisory
https://usn.ubuntu.com/3877-1/
usn.ubuntu.com
https://usn.ubuntu.com/4547-1/
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