CVE-2023-27830
Published: 12 April 2023
TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact that TightVNC runs in the backend as a high-privileges account.
Notes
| Author | Note |
|---|---|
| rodrigo-zaiden | Windows issue only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
tightvnc Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(Windows only)
|
| focal |
Not vulnerable
(Windows only)
|
|
| jammy |
Not vulnerable
(Windows only)
|
|
| kinetic |
Not vulnerable
(Windows only)
|
|
| lunar |
Not vulnerable
(Windows only)
|
|
| trusty |
Not vulnerable
(Windows only)
|
|
| upstream |
Not vulnerable
(debian: Windows-specific)
|
|
| xenial |
Not vulnerable
(Windows only)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.0 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |