Vulnerability Details : CVE-2020-25708
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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2020-25708
Probability of exploitation activity in the next 30 days: 0.21%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 58 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-25708
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-25708
-
The product divides a value by zero.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2020-25708
-
https://bugzilla.redhat.com/show_bug.cgi?id=1896739
1896739 – (CVE-2020-25708) CVE-2020-25708 libvncserver: libvncserver/rfbserver.c has a divide by zero which could result in DoSExploit;Issue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/09/msg00035.html
[SECURITY] [DLA 3125-1] libvncserver security updateMailing List;Third Party Advisory
Products affected by CVE-2020-25708
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:libvncserver_project:libvncserver:0.9.12:*:*:*:*:*:*:*