High severity · published Nov 27, 2020
CVE-2020-25708
A divide by zero issue was found to occur in libvncserver-0.9.12
7.5
CVSS
1.6%
EPSS
No
On KEV
Description
A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0 · source: NVD
LI
Libvncserver · Libvncserver Project
0.9.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25708
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25708
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=1896739
Mailing List
https://lists.debian.org/debian-lts-announce/2022/09/msg00035.html
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