LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-6307 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of libvncserver as shipped with Red Hat Enterprise Linux 6 and 7, as they did not include support for tightvnc file transfer.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | libvncserver | Not affected |
| Red Hat Enterprise Linux 6 | libvncserver | Not affected |
Vulmon